{"id":276840,"date":"2019-11-04T15:31:41","date_gmt":"2019-11-04T08:31:41","guid":{"rendered":"https:\/\/quipperhome.wpcomstaging.com\/?p=276840"},"modified":"2021-11-24T20:15:13","modified_gmt":"2021-11-24T13:15:13","slug":"belajar-fluida-ingat-hukum-bernoulli","status":"publish","type":"post","link":"https:\/\/quipperhome.wpcomstaging.com\/mapel\/fisika\/belajar-fluida-ingat-hukum-bernoulli\/","title":{"rendered":"Belajar Fluida, Ingat Hukum Bernoulli!"},"content":{"rendered":"<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-full wp-image-276866\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-1-1.png\" alt=\"Belajar Fluida, Ingat Hukum Bernoulli!\" width=\"800\" height=\"533\" srcset=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-1-1.png 800w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-1-1-768x512.png 768w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-1-1-585x390.png?crop=1 585w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-1-1-263x175.png?crop=1 263w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-1-1-300x200.png 300w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Hai Quipperian, bagaimana kabarnya? Semoga selalu sehat dan tetap semangat belajar, ya!<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Pada kesempatan kali ini, Quipper Blog akan mengajak Quipperian untuk belajar tentang salah satu hukum yang berlaku pada fluida dinamik. Hukum yang dimaksud adalah Hukum Bernoulli. Siapa di antara Quipperian yang pernah mendengar istilah Hukum Bernoulli? Lalu, apa saja manfaat hukum ini dalam kehidupan? Penerapan paling sederhana dari Hukum Bernoulli bisa dilihat saat kamu menggunakan parfum atau obat nyamuk semprot. Benarkah demikian? Untuk tahu jawabannya, simak pembahasan berikut ini.<\/span><\/p>\n<h2><strong>Hukum Bernoulli<\/strong><\/h2>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-276129\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/10\/Dinamika-Rotasi-Fisika-Kelas-11-2.png\" alt=\"\" width=\"800\" height=\"533\" srcset=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/10\/Dinamika-Rotasi-Fisika-Kelas-11-2.png 800w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/10\/Dinamika-Rotasi-Fisika-Kelas-11-2-300x200.png 300w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/10\/Dinamika-Rotasi-Fisika-Kelas-11-2-768x512.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Hukum Bernoulli ditemukan oleh ilmuwan asal Jerman, yaitu Daniel Bernoulli. Dari penemuan ini, Bernoulli berhasil menerbitkan sebuah buku berjudul Hydrodynamica pada tahun 1738. Mungkin Quipperian penasaran dengan apa sih yang dikatakan Bernoulli tentang hukumnya ini? Adapun pernyataan Hukum Bernoulli adalah jumlah dari tekanan, energi kinetik tiap volume, dan energi potensial tiap volume di setiap titik sepanjang aliran fluida adalah sama.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Artinya, saat aliran fluida meningkat, tekanan fluida tersebut akan turun. Dengan demikian, energi potensial yang dimiliki fluida juga akan turun. Sebaliknya, saat kecepatan aliran fluida turun, tekanan fluida akan naik.<\/span><\/p>\n<h2><strong>Syarat Fluida pada Hukum Bernoulli<\/strong><\/h2>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-275746\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/10\/Keseimbangan-Benda-Tegar-Fisika-Kelas-11-4.png\" alt=\"\" width=\"800\" height=\"533\" srcset=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/10\/Keseimbangan-Benda-Tegar-Fisika-Kelas-11-4.png 800w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/10\/Keseimbangan-Benda-Tegar-Fisika-Kelas-11-4-300x200.png 300w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/10\/Keseimbangan-Benda-Tegar-Fisika-Kelas-11-4-768x512.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Hukum ini ternyata bisa diaplikasikan untuk berbagai jenis aliran fluida asalkan memenuhi syarat berikut ini.<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Fluidanya tidak dapat dimampatkan (<\/span><em><span style=\"font-weight: 400;\">incompressible<\/span><\/em><span style=\"font-weight: 400;\">).<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Fluidanya tidak memiliki viskositas.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Aliran fluidanya tetap (<\/span><em><span style=\"font-weight: 400;\">steady<\/span><\/em><span style=\"font-weight: 400;\">).<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Aliran fluidanya berjenis laminar (tetap dan tidak membentuk pusaran).<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Tidak ada hilang energi akibat gesekan antara fluida dan dinding serta turbulen.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">Tidak ada transfer energi kalor.<\/span><\/li>\n<\/ol>\n<h2><strong>Persamaan Hukum Bernoulli<\/strong><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-272527\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/07\/Kelas-10-Merapat-Yuk-Simak-Pembahasan-Materi-Fisika-Momentum3-1.png\" alt=\"\" width=\"800\" height=\"533\" srcset=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/07\/Kelas-10-Merapat-Yuk-Simak-Pembahasan-Materi-Fisika-Momentum3-1.png 800w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/07\/Kelas-10-Merapat-Yuk-Simak-Pembahasan-Materi-Fisika-Momentum3-1-300x200.png 300w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/07\/Kelas-10-Merapat-Yuk-Simak-Pembahasan-Materi-Fisika-Momentum3-1-768x512.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Persamaan Hukum Bernoulli berkaitan dengan tekanan, kecepatan, dan perbedaan ketinggian fluida. Untuk lebih jelasnya, perhatikan gambar berikut.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-276860\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-1.png\" alt=\"\" width=\"468\" height=\"362\" srcset=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-1.png 468w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-1-300x232.png 300w\" sizes=\"(max-width: 468px) 100vw, 468px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Secara matematis, Hukum Bernoulli dirumuskan sebagai berikut.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-276859\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-2.png\" alt=\"\" width=\"364\" height=\"86\" srcset=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-2.png 364w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-2-300x71.png 300w\" sizes=\"(max-width: 364px) 100vw, 364px\" \/><\/span><\/p>\n<p><span style=\"font-weight: 400;\">Keterangan:<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">P<\/span><\/em><sub><em><span style=\"font-weight: 400;\">1<\/span><\/em><\/sub> <span style=\"font-weight: 400;\">= tekanan di pipa 1 (N\/m<\/span><sup><span style=\"font-weight: 400;\">2<\/span><\/sup><span style=\"font-weight: 400;\">);<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">P<\/span><\/em><sub><em><span style=\"font-weight: 400;\">2<\/span><\/em><\/sub> <span style=\"font-weight: 400;\">= tekanan di pipa 2 (N\/m<\/span><sup><span style=\"font-weight: 400;\">2<\/span><\/sup><span style=\"font-weight: 400;\">);<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">\u03c1<\/span><\/em><sub><em><span style=\"font-weight: 400;\">1<\/span><\/em><\/sub><span style=\"font-weight: 400;\"> = massa jenis pipa 1 (kg\/m<\/span><sup><span style=\"font-weight: 400;\">3<\/span><\/sup><span style=\"font-weight: 400;\">);<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">\u03c1<\/span><\/em><sub><em><span style=\"font-weight: 400;\">2<\/span><\/em><\/sub><span style=\"font-weight: 400;\"> = massa jenis pipa 2 (kg\/m<\/span><sup><span style=\"font-weight: 400;\">3<\/span><\/sup><span style=\"font-weight: 400;\">);<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">v<\/span><\/em><sub><em><span style=\"font-weight: 400;\">1<\/span><\/em><\/sub><span style=\"font-weight: 400;\"> = kecepatan fluida di pipa 1 (m\/s);<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">v<\/span><\/em><sub><em><span style=\"font-weight: 400;\">2<\/span><\/em><\/sub><span style=\"font-weight: 400;\"> = kecepatan fluida di pipa 2 (m\/s);<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">h<\/span><\/em><sub><em><span style=\"font-weight: 400;\">1<\/span><\/em><\/sub><span style=\"font-weight: 400;\"> = ketinggian penampang pipa 1 dari titik acuan (m);<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">h<\/span><\/em><sub><em><span style=\"font-weight: 400;\">2 <\/span><\/em><\/sub><span style=\"font-weight: 400;\">= ketinggian penampang pipa 2 dari titik acuan (m); dan<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">g<\/span><\/em><span style=\"font-weight: 400;\"> = percepatan gravitasi (m\/s<\/span><sup><span style=\"font-weight: 400;\">2<\/span><\/sup><span style=\"font-weight: 400;\">).<\/span><\/p>\n<h2><strong>Penerapan Hukum Bernoulli<\/strong><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-276864\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli.png\" alt=\"Belajar Fluida, Ingat Hukum Bernoulli!\" width=\"800\" height=\"533\" srcset=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli.png 800w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-300x200.png 300w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-768x512.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Penerapan Hukum Bernoulli bisa Quipperian lihat pada benda-benda berikut ini.<\/span><\/p>\n<h3><strong>1. Parfum dan obat nyamuk semprot<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Seperti yang telah disebutkan sebelumnya, contoh sederhana Hukum Bernoulli bisa kamu lihat pada parfum atau obat nyamuk semprot. Saat kamu menekan parfum parfum ke bawah, cairan bagian bawah akan bergerak dengan kelajuan rendah. Akibatnya, tekanannya di cairan bagian bawah akan semakin tinggi.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Hal itu mampu mendorong cairan untuk bergerak ke atas melalui selang parfum yang berukuran kecil. Saat sampai di atas selang, udara di bagian pengisap akan keluar bersamaan dengan semburan parfum. Ternyata, saat kamu menggunakan parfum pun masih membutuhkan konsep Fisika, ya?<\/span><\/p>\n<h3><strong>2. Pipa venturimeter<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Pipa venturimeter adalah alat yang digunakan untuk mengukur kelajuan aliran zat cair. Alat ini didesain berbentuk pipa yang mengalami penyempitan diameter. Berdasarkan ada tidaknya alat pengukur tekanan, venturimeter dibedakan menjadi dua, yaitu venturimeter tanpa manometer dan venturimeter dengan manometer.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Manometer merupakan alat yang digunakan untuk mengukur tekanan udara di ruang tertutup. Jika Quipperian ingin tahu bentuk venturimeter, perhatikan gambar berikut.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-276858\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-3.png\" alt=\"\" width=\"258\" height=\"210\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Venturimeter yang ditampilkan pada gambar di atas tidak memiliki manometer. Oleh karena itu, untuk menentukan kecepatan aliran zat cair yang masuk penampang 1 dan 2 dirumuskan sebagai berikut.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-276857\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-4.png\" alt=\"\" width=\"345\" height=\"142\" srcset=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-4.png 345w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-4-300x123.png 300w\" sizes=\"(max-width: 345px) 100vw, 345px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Keterangan:<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">A<\/span><\/em><sub><em><span style=\"font-weight: 400;\">1<\/span><\/em><\/sub><span style=\"font-weight: 400;\"> = luas penampang pipa 1 (m<\/span><sup><span style=\"font-weight: 400;\">2<\/span><\/sup><span style=\"font-weight: 400;\">);<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">A<\/span><\/em><sub><em><span style=\"font-weight: 400;\">2<\/span><\/em><\/sub><span style=\"font-weight: 400;\"> = luas penampang pipa 2 (m<\/span><sup><span style=\"font-weight: 400;\">2<\/span><\/sup><span style=\"font-weight: 400;\">);<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">v<\/span><\/em><sub><em><span style=\"font-weight: 400;\">1<\/span><\/em><\/sub><span style=\"font-weight: 400;\"> = kecepatan pada penampang pipa 1 (m\/s);<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">v<\/span><\/em><sub><em><span style=\"font-weight: 400;\">2<\/span><\/em><\/sub><span style=\"font-weight: 400;\"> = kecepatan pada penampang pipa 2 (m\/s);<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">h<\/span><\/em><span style=\"font-weight: 400;\"> = perbedaan tinggi cairan pipa kecil di atas venturimeter (m); dan<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">g<\/span><\/em><span style=\"font-weight: 400;\"> = percepatan gravitasi (m\/s<\/span><sup><span style=\"font-weight: 400;\">2<\/span><\/sup><span style=\"font-weight: 400;\">).<\/span><\/p>\n<h3><strong>3. Tabung pitot<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Tabung pitot adalah alat yang digunakan untuk mengukur kelajuan gas di dalam pipa. Perhatikan gambar berikut.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-276856\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-5.png\" alt=\"\" width=\"469\" height=\"248\" srcset=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-5.png 469w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-5-300x159.png 300w\" sizes=\"(max-width: 469px) 100vw, 469px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Secara matematis, laju aliran gas di dalam pipa dirumuskan sebagai berikut.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-276855\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-6.png\" alt=\"\" width=\"143\" height=\"108\" srcset=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-6.png 143w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-6-80x60.png 80w\" sizes=\"(max-width: 143px) 100vw, 143px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Keterangan:<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">v<\/span><\/em><span style=\"font-weight: 400;\"> = laju aliran gas (m\/s);<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">\ud835\udf0c<\/span><\/em> <span style=\"font-weight: 400;\">= massa jenis gas yang mengalir (kg\/m<\/span><sup><span style=\"font-weight: 400;\">3<\/span><\/sup><span style=\"font-weight: 400;\">);<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">\ud835\udf0c<\/span><\/em><em><span style=\"font-weight: 400;\">\u2019<\/span><\/em><span style=\"font-weight: 400;\"> = massa jenis cairan manometer (kg\/m<\/span><sup><span style=\"font-weight: 400;\">3<\/span><\/sup><span style=\"font-weight: 400;\">);<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">h <\/span><\/em><span style=\"font-weight: 400;\">= selisih ketinggian antara dua kolom cairan manometer (m); serta<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">g <\/span><\/em><span style=\"font-weight: 400;\">= percepatan gravitasi (m\/s<\/span><sup><span style=\"font-weight: 400;\">2<\/span><\/sup><span style=\"font-weight: 400;\">).<\/span><\/p>\n<h3><strong>4. Alat pengukur kebocoran tangki<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Jika ada bejana berisi air lalu bejana tersebut mengalami kebocoran pada jarak <\/span><em><span style=\"font-weight: 400;\">h<\/span><\/em><span style=\"font-weight: 400;\"> di bawah permukaan fluida, maka kelajuan fluidanya sama dengan kelajuan benda yang jatuh bebas dari ketinggian <\/span><em><span style=\"font-weight: 400;\">h<\/span><\/em><span style=\"font-weight: 400;\">. Untuk lebih jelasnya, perhatikan gambar berikut.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-276854\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-7.png\" alt=\"\" width=\"325\" height=\"270\" srcset=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-7.png 325w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-7-300x249.png 300w\" sizes=\"(max-width: 325px) 100vw, 325px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Secara matematis, kelajuan fluida yang terpancar keluar dari bejana dirumuskan sebagai berikut.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-276853\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-8.png\" alt=\"\" width=\"132\" height=\"71\" \/>\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Oleh karena itu, debit fluidanya dirumuskan sebagai berikut.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-276852\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-9.png\" alt=\"\" width=\"177\" height=\"69\" \/><\/span><\/p>\n<p><span style=\"font-weight: 400;\">Bisa juga Quipperian menggunakan SUPER \u201cSolusi Quipper\u201d berikut ini.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-276851\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-10.png\" alt=\"\" width=\"807\" height=\"325\" srcset=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-10.png 807w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-10-300x121.png 300w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-10-768x309.png 768w\" sizes=\"(max-width: 807px) 100vw, 807px\" \/><\/p>\n<h3><strong>5. Gaya angkat pesawat<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Pernahkah Quipperian berpikir, bagaimana pesawat itu bisa terbang mengudara? Sementara massa pesawat sangat besar. Pesawat bisa terbang karena adanya gaya angkat pesawat di bagian sayapnya. Syarat pesawat bisa terbang yaitu gaya angkat pesawat harus lebih besar daripada berat pesawat itu sendiri. Secara matematis, gaya angkat pesawat dirumuskan sebagai berikut.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-276850\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-11.png\" alt=\"\" width=\"244\" height=\"85\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Keterangan:<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">v<\/span><\/em><sub><em><span style=\"font-weight: 400;\">1<\/span><\/em><\/sub><span style=\"font-weight: 400;\"> = kecepatan aliran udara di bawah sayap (m\/s);<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">v<\/span><\/em><sub><em><span style=\"font-weight: 400;\">2<\/span><\/em><\/sub><span style=\"font-weight: 400;\"> = kecepatan aliran udara di atas sayap (m\/s);<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">A<\/span><\/em><span style=\"font-weight: 400;\"> = luas penampang sayap (m<\/span><sup><span style=\"font-weight: 400;\">2<\/span><\/sup><span style=\"font-weight: 400;\">);<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">\u03c1 <\/span><\/em><span style=\"font-weight: 400;\">= massa jenis udara (kg\/m<\/span><sup><span style=\"font-weight: 400;\">3<\/span><\/sup><span style=\"font-weight: 400;\">); dan<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">F<\/span><\/em><sub><em><span style=\"font-weight: 400;\">1<\/span><\/em><\/sub><span style=\"font-weight: 400;\"> \u2013 <\/span><em><span style=\"font-weight: 400;\">F<\/span><\/em><sub><em><span style=\"font-weight: 400;\">2<\/span><\/em><\/sub><span style=\"font-weight: 400;\"> = gaya angkat pesawat (N).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Setelah belajar tentang pernyataan, persamaan, dan penerapan Hukum Bernoulli, kini saatnya Quipperian belajar mengerjakan soal-soal terkait Hukum Bernoulli bersama Quipper Blog. <\/span><em><span style=\"font-weight: 400;\">Check this out<\/span><\/em><span style=\"font-weight: 400;\">!<\/span><\/p>\n<h2><strong>Contoh Soal 1<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">Sebuah pipa horizontal mempunyai luas 0,1 m<\/span><sup><span style=\"font-weight: 400;\">2 <\/span><\/sup><span style=\"font-weight: 400;\">pada penampang pertama dan 0,05 m<\/span><sup><span style=\"font-weight: 400;\">2<\/span><\/sup><span style=\"font-weight: 400;\"> pada penampang kedua. Laju aliran dan tekanan fluida pada penampang pertama berturut-turut 5 m\/s dan 2 x 10<\/span><sup><span style=\"font-weight: 400;\">5<\/span><\/sup><span style=\"font-weight: 400;\"> N\/m<\/span><sup><span style=\"font-weight: 400;\">2<\/span><\/sup><span style=\"font-weight: 400;\">. Jika massa jenis fluida yang mengalir 0,8 g\/<\/span><sup><span style=\"font-weight: 400;\">cm3<\/span><\/sup><span style=\"font-weight: 400;\">, tentukan besarnya tekanan fluida di penampang kedua!<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Pembahasan:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Diketahui:<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">A<\/span><\/em><sub><em><span style=\"font-weight: 400;\">1<\/span><\/em><\/sub><span style=\"font-weight: 400;\"> = 0,1 m<\/span><sup><span style=\"font-weight: 400;\">2<\/span><\/sup><\/p>\n<p><em><span style=\"font-weight: 400;\">A<\/span><\/em><sub><em><span style=\"font-weight: 400;\">2<\/span><\/em><\/sub><span style=\"font-weight: 400;\"> = 0,05 m<\/span><sup><span style=\"font-weight: 400;\">2<\/span><\/sup><\/p>\n<p><em><span style=\"font-weight: 400;\">v<\/span><\/em><sub><em><span style=\"font-weight: 400;\">1<\/span><\/em><\/sub><span style=\"font-weight: 400;\"> = 5 m\/s<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">P<\/span><\/em><sub><em><span style=\"font-weight: 400;\">1<\/span><\/em><\/sub><span style=\"font-weight: 400;\"> = 2 x 10<\/span><span style=\"font-weight: 400;\">5<\/span><span style=\"font-weight: 400;\"> N\/m<\/span><sup><span style=\"font-weight: 400;\">2<\/span><\/sup><\/p>\n<p><em><span style=\"font-weight: 400;\">\u03c1<\/span><\/em><sub><em><span style=\"font-weight: 400;\">1 <\/span><\/em><\/sub><span style=\"font-weight: 400;\">= <\/span><em><span style=\"font-weight: 400;\">\u03c1<\/span><\/em><sub><em><span style=\"font-weight: 400;\">2<\/span><\/em><\/sub><span style=\"font-weight: 400;\"> = 0,8 g\/cm<\/span><sup><span style=\"font-weight: 400;\">3<\/span><\/sup><\/p>\n<p><em><span style=\"font-weight: 400;\">h<\/span><\/em><sub><em><span style=\"font-weight: 400;\">1<\/span><\/em><\/sub><span style=\"font-weight: 400;\"> = <\/span><em><span style=\"font-weight: 400;\">h<\/span><\/em><sub><em><span style=\"font-weight: 400;\">2<\/span><\/em><\/sub><span style=\"font-weight: 400;\"> = 0 (posisi horizontal)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ditanya: <\/span><em><span style=\"font-weight: 400;\">P<\/span><\/em><sub><em><span style=\"font-weight: 400;\">2<\/span><\/em><\/sub><span style=\"font-weight: 400;\"> =\u2026?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Pembahasan:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Mula-mula, tentukan dahulu kecepatan aliran fluida pada penampang kedua menggunakan persamaan kontinuitas berikut.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-276849\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-12.png\" alt=\"\" width=\"201\" height=\"138\" \/><\/span><\/p>\n<p><span style=\"font-weight: 400;\">Selanjutnya, gunakan persamaan Hukum Bernoulli untuk menentukan tekanannya.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-276848\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-13.png\" alt=\"\" width=\"668\" height=\"190\" srcset=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-13.png 668w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-13-300x85.png 300w\" sizes=\"(max-width: 668px) 100vw, 668px\" \/>\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Jadi, tekanan pada penampang kedua adalah 1,7 x 10<\/span><sup><span style=\"font-weight: 400;\">5<\/span><\/sup><span style=\"font-weight: 400;\"> N\/m<\/span><sup><span style=\"font-weight: 400;\">2<\/span><\/sup><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h2><strong>Contoh Soal 2<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">Laju aliran gas oksigen terukur dengan tabung pitot sebesar 2 m\/s. Jika massa jenis gas oksigen 0,5 g\/cm<\/span><sup><span style=\"font-weight: 400;\">3<\/span><\/sup><span style=\"font-weight: 400;\"> dan massa jenis zat cair di bagian manometer 750 kg\/m<\/span><sup><span style=\"font-weight: 400;\">3<\/span><\/sup><span style=\"font-weight: 400;\">.<\/span><span style=\"font-weight: 400;\">\u00a0<\/span><span style=\"font-weight: 400;\">Tentukan selisih ketinggian antara dua kolom cairan manometer!<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Pembahasan:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Diketahui:<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">v<\/span><\/em><span style=\"font-weight: 400;\"> = 2 m\/s<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u03c1 = 0,5 g\/cm<\/span><sup><span style=\"font-weight: 400;\">3 <\/span><\/sup><span style=\"font-weight: 400;\">= 500 kg\/m<\/span><sup><span style=\"font-weight: 400;\">3<\/span><\/sup><\/p>\n<p><span style=\"font-weight: 400;\">\u03c1\u2019 = 750 kg\/m<\/span><sup><span style=\"font-weight: 400;\">3<\/span><\/sup><\/p>\n<p><em><span style=\"font-weight: 400;\">g <\/span><\/em><span style=\"font-weight: 400;\">= 10 m\/s<\/span><sup><span style=\"font-weight: 400;\">2<\/span><\/sup><\/p>\n<p><span style=\"font-weight: 400;\">Ditanya: <\/span><em><span style=\"font-weight: 400;\">h <\/span><\/em><span style=\"font-weight: 400;\">=\u2026?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Pembahasan:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Laju aliran gas pada tabung pitot dirumuskan sebagai berikut.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-276847\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-14.png\" alt=\"\" width=\"203\" height=\"271\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Jadi, selisih ketinggian antara dua kolom cairan manometer adalah 0,13 m atau 13 cm.<\/span><\/p>\n<h2><strong>Contoh Soal 3<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">Perhatikan gambar berikut.<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-276846\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-15.png\" alt=\"\" width=\"367\" height=\"233\" srcset=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-15.png 367w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-15-300x190.png 300w\" sizes=\"(max-width: 367px) 100vw, 367px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Tentukan nilai <\/span><em><span style=\"font-weight: 400;\">H<\/span><\/em><span style=\"font-weight: 400;\"> agar jangkauan terjauhnya 2\u221a3 m.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Pembahasan:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Diketahui:<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">x<\/span><\/em><span style=\"font-weight: 400;\"> = 2\u221a3 m<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u03b1 = 60<\/span><sup><span style=\"font-weight: 400;\">o<\/span><\/sup><\/p>\n<p><span style=\"font-weight: 400;\">Ditanya: <\/span><em><span style=\"font-weight: 400;\">H<\/span><\/em><span style=\"font-weight: 400;\"> =\u2026?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Pembahasan:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Kecepatan semburan air dapat dirumuskan sebagai berikut.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-276845\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-16.png\" alt=\"\" width=\"247\" height=\"73\" \/>\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Berdasarkan persamaan gerak parabola, jarak terjauh pancaran air dengan sudut elevasi\u00a0 60<\/span><sup><span style=\"font-weight: 400;\">o<\/span><\/sup><span style=\"font-weight: 400;\"> dirumuskan sebagai berikut.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-276844\" src=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-17.png\" alt=\"\" width=\"270\" height=\"343\" srcset=\"https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-17.png 270w, https:\/\/quipperhome.wpcomstaging.com\/wp-content\/uploads\/2019\/11\/Belajar-Fluida-Ingat-Hukum-Bernoulli-17-236x300.png 236w\" sizes=\"(max-width: 270px) 100vw, 270px\" \/><\/span><\/p>\n<p><span style=\"font-weight: 400;\">Jadi, nilai <\/span><em><span style=\"font-weight: 400;\">H<\/span><\/em><span style=\"font-weight: 400;\"> agar jangkauan terjauhnya 2\u221a3 m adalah 2 m.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Itulah pembahasan Quipper Blog kali ini tentang Hukum Bernoulli beserta contoh soalnya. Semoga Quipperian semakin paham dengan materi ini sehingga bisa lebih semangat untuk belajar Fisika. Ingat bahwa Fisika itu ilmu sahabat. Artinya, kajian Fisika sangat dekat dengan kehidupan sehari-hari. Jangan menganggap bahwa Fisika untuk sulit dan menjenuhkan. Asalkan Quipperian rajin belajar dan semangat, Fisika pasti terasa mudah.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Agar belajarmu menjadi semakin mudah, silakan gabung dengan <\/span><a href=\"https:\/\/learn.quipper.com\/\"><strong>Quipper Video<\/strong><\/a><span style=\"font-weight: 400;\">, yuk. Temukan ribuan soal beserta pembahasan tutor kece Quipper Video. Bersama Quipper Video, belajar jadi lebih mudah dan menyenangkan. Salam Quipper!<\/span><\/p>\n<p><strong>Penulis: Eka Viandari<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hai Quipperian, bagaimana kabarnya? Semoga selalu sehat dan tetap semangat belajar, ya! Pada kesempatan kali ini, Quipper Blog akan mengajak Quipperian untuk belajar tentang&hellip;<\/p>\n","protected":false},"author":99400369,"featured_media":276866,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_crdt_document":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[679384877,679384888],"tags":[],"ppma_author":[679386827],"class_list":["post-276840","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fisika","category-mapel"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Belajar Fluida, Ingat Hukum Bernoulli! - Quipper Blog<\/title>\n<meta name=\"description\" content=\"Hukum Bernoulli adalah jumlah dari tekanan, energi kinetik tiap volume, dan energi potensial tiap volume di setiap titik sepanjang aliran fluida adalah sama.\u00a0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.quipper.com\/id\/blog\/mapel\/fisika\/belajar-fluida-ingat-hukum-bernoulli\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Belajar Fluida, Ingat Hukum Bernoulli! - 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