Artikel Fisika kelas XI ini membahas kegiatan sehari-hari yang merupakan penerapan dari Hukum Bernoulli. Apa saja ya, penerapan Hukum Bernoulli dalam kehidupan sehari-hari? Yuk, simak penjelasan lengkapnya!
—
Tidak semua dari kita suka menyiram tanaman sore hari, tapi kita semua suka melakukan ini: jailin teman dan menyiramnya dengan selang air. Ketika teman kita lari, kita refleks menutup sebagian lubang di selang dengan jempol, dan membuat pancurannya semakin jauh sehingga mengenai teman dan dia menjerit, ‘Heh! Heh! Heh! Berhenti! Awas ya!’
Secara tidak sadar, kamu telah menerapkan prinsip Hukum Bernoulli. Apa itu Hukum Bernoulli?
Hukum Bernoulli adalah hukum yang berlaku untuk fluida dinamis. Ingat, ya, fluida bukan berarti air, tetapi zat yang bisa mengalir. Ini berarti, gas juga termasuk ke dalamnya.
Tunggu. Jangan stres dan takut dulu melihat rumus di atas. Meski terlihat mengintimidasi, sejatinya, rumus tersebut banyak kita terapkan di kehidupan sehari-hari, lho! Berikut adalah 5 contoh penerapan Hukum Bernoulli di kehidupan sehari-hari:
Baca juga: Cara Gampang Memahami Konsep Momen Inersia
1. Tangki Air Bocor
Di rumah kamu pasti ada tangki air seperti itu. Bayangin, deh, jika suatu hari, orangtua kamu memanggil kamu dan minta untuk menguras tangki itu. Apa yang kamu lakukan? Ya, betul. Nangis kejer. Oke. Bercanda. Kamu hanya tinggal membuka lubang kecil di bagian bawah tangki supaya airnya keluar kan.
Masalahnya, berapa lama kamu harus menunggu sampai si air habis?
Kita bisa mencari tahu hal tersebut menggunakan Hukum Bernoulli. Dengan persamaan Bernoulli, kamu bisa mencari tahu berapa kecepatan air yang keluar dari lubang kecil itu.
Syaratnya satu: buka tutup tangki air di bagian atas. Jika tangki tersebut tidak punya tutup dan ada bagian yang berlubang, artinya, kedua bagian itu akan langsung ‘bertemu’ dengan atmosfer di udara. Maka, tekanan yang ada di bagian itu, sama-sama berasal dari tekanan atmosfer. Sehingga, rumus Bernoulli-nya bisa kita ubah menjadi:
Nah, karena luas permukaan bagian atas tangki jauh lebih besar daripada luas permukaan lubang di bawah. Artinya, air yang berada di bagian atas tangki tidak banyak bergerak. Maka, kita bisa anggap kecepatannya (v) sama dengan nol. Jadi, kita bisa ganti lagi rumus Bernoullinya menjadi:
Kalau sudah begini, kita bisa hilangkan massa jenisnya menjadi:
Sekarang persamaannya jadi sederhana banget, kan? Hore!
Eits, nggak cuma sampai di situ. Kalau kamu mau iseng, kamu bisa tambahkan keran di lubang bagian bawah yang menghadap ke atas. Lalu liat yang terjadi. Tinggi air yang keluar dari keran akan sama dengan tinggi air di dalam tangki!
Baca juga: Apakah Hantu Itu Benar-Benar Ada?
2. Mengendarai Sepeda Motor
Siapa yang pernah liat orang naik motor, lalu bagian belakang bajunya terbang dan menggembung? Hal itu juga membuktikan hukum Bernoulli, lho. Ketika kita mengendarai sepeda motor dalam keadaan ngebut, maka kecepatan udara di bagian depan dan samping tubuh kamu besar. Sebaliknya, kecepatan udara di belakang tubuh kamu lebih kecil. Alhasil, tekanan udara di belakang tubuh kamu menjadi lebih besar daripada di depan. Nah, perbedaan tekanan udara inilah yang membuat udara mendorong baju kamu ke belakang, sehingga menjadi menggembung.
3. Menekan Selang Air
Nah, hal yang satu ini pasti sering banget kamu liat deh. Kalau lagi nyiram tanaman, pasti kita suka ‘menekan’ ujung selang air biar pancuran airnya semakin jauh. Nah, hal ini berkaitan dengan persamaan Bernoulli. Kamu pasti ingat dong bagaimana semakin kecil luas permukaan suatu benda, maka akan semakin besar tekanannya.
Sekarang coba kamu angkat selang air, lalu arahkan ke tanganmu. Setelahnya, letakkan jempol kamu hingga setengah lubangnya tertutupi. Sesuai dengan hukum Bernoulli, dengan membuat luas permukaannya mengecil (menaruh jempol setengah menutup lubang) maka kecepatan air yang keluar dari selang akan lebih kencang sehingga menyebabkan energi kinetiknya akan semakin besar. Makanya, jadi lebih sakit kalau kena tangan.
4. Gaya Angkat Pesawat
Pernah merhatiin bentuk sayap pesawat? Ketika mau terbang, pilot akan mengubah mode sayap sehingga membengkok ke bawah. Iya, hal ini bukan buat keren-kerenan aja kok. Karena pesawat benaran nggak bisa di ‘HAH! HAH!’-in kayak kita bikin pesawat kertas, maka desainnya harus diperhitungkan dengan seksama. Makanya, untuk bisa terbang, para pendesain pesawat memperhitungkan Hukum Bernoulli. Coba, deh, ingat kembali rumus Bernoulli. Pasti akan terlihat kalau kecepatan dan tekanan itu berbanding terbalik. Artinya, kalau kecepatannya tinggi, maka tekanannya akan rendah.
Berdasarkan hal itu, dibuatlah desain sayap pesawat yang bisa diubah-ubah modenya. Pada saat take off, pilot akan mengubahnya menjadi ‘bengkok’ ke arah bawah. Buat apa? Ya, supaya pada bagian atas, kecepatan udaranya tinggi. Alhasil, tekanan di bagian itu akan menjadi lebih rendah daripada di bawah pesawat. Saat tekanan udara di bagian bawah sayap lebih tinggi, maka si udara akan bisa ‘mengangkat’ pesawat dan dia bisa take off deh.
Baca juga: Elastisitas Zat Padat dan Hukum Hooke
5. Cerobong Asap
Seperti yang udah kita bahas di atas pada konsep motor dan pesawat, Hukum Bernoulli menyatakan hubungan kecepatan dan tekanan berbanding terbalik. Hal ini terdapat pada cerobong asap pusat industri.
Cerobong asap yang baik akan tersambung ke ruangan yang tertutup. Karena ruangan itu tertutup, maka tidak ada udara yang berhembus, yang menyebabkan tekanannya menjadi besar. Sehingga, secara tidak langsung asap akan ‘tertekan’ naik ke atas cerobong.
Begitu juga pada bagian atas cerobong. Karena bagian atas cerobong didesain terbuka, maka angin di luar bangunan akan meniup bagian atas cerobong, sehingga tekanan udara di sekitarnya menjadi kecil dan asap bisa terbuang keluar.
—
Bagaimana, teman-teman? Sekarang sudah tahu kan, apa saja penerapan Hukum Bernoulli pada kehidupan sehari-hari? Ternyata banyak kegiatan sehari-hari yang menggunakan hukum ini, ya! Kalau kamu tahu contoh lainnya, coba tulis di kolom komentar, dong! Kalau kamu suka materi seperti ini dan ingin menontonnya dalam bentuk video beranimasi, langsung aja meluncur ke ruangbelajar!
Sumber Gambar:
GIF ‘Tangki Air’ [Daring]. Tautan: https://www.youtube.com/c/crashcourse/videos (Diakses: 22 Oktober 2018)
GIF ‘Berkendara dengan Sepeda Motor’ [Daring]. Tautan: https://tenor.com/view/the-place-beyond-the-pines-gif-11471857 (Diakses: 22 Oktober 2018)
GIF ‘Pesawat Terbang’ [Daring]. Tautan: https://www.youtube.com/c/Lesics/videos (Diakses: 22 Oktober 2018)
GIF ‘Cerobong Asap Pabrik’ [Daring]. Tautan: https://img-s1.onedio.com/id-5b73f0f8a694e35c1a4ec2e6/rev-0/w-900/h-592/f-gif/s-c1e8428c6c0fcb6077b6a58801fa9c91c6f62e3a.gif (Diakses: 22 Oktober 2018)
Artikel ini telah diperbarui pada 21 September 2021.
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<h1 class="content-title">
Penerapan Hukum Bernoulli dalam Kehidupan Sehari-hari | Fisika Kelas 11 </h1>
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<p class="content-author"><a href="https://www.ruangguru.com/blog/author/kresnoadi" class="">Kresnoadi</a> </p>
<p class="content-info"><span>September 23, 2021 • </span> <span>5 minutes read</span></p>
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<p><img decoding="async" style="width: 820px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Penerapan%20Hukum%20Bernoulli%20dalam%20Kehidupan%20Sehari-Hari.jpg" alt="Penerapan Hukum Bernoulli dalam Kehidupan Sehari-Hari" width="820" /></p>
<blockquote>
<p style="font-size: 16px; text-align: center;"><em>Artikel Fisika kelas XI ini membahas kegiatan sehari-hari yang merupakan penerapan dari Hukum Bernoulli. Apa saja ya, penerapan Hukum Bernoulli dalam kehidupan sehari-hari? Yuk, simak penjelasan lengkapnya!</em></p>
<p style="font-size: 16px; text-align: center;"><em>—</em></p>
</blockquote>
<p style="font-size: 16px; text-align: center;"><em><span id="more-4534"></span></em></p>
<p style="text-align: justify;">Tidak semua dari kita suka menyiram tanaman sore hari, tapi kita semua suka melakukan ini: jailin teman dan menyiramnya dengan selang air. Ketika teman kita lari, kita refleks menutup sebagian lubang di selang dengan jempol, dan membuat pancurannya semakin jauh sehingga mengenai teman dan dia menjerit, ‘Heh! Heh! Heh! Berhenti! Awas ya!’</p>
<p style="text-align: justify;">Secara tidak sadar, kamu telah menerapkan prinsip <a href="/blog/cara-mudah-mengingat-rumus-bernoulli" rel="noopener"><strong>Hukum Bernoulli</strong></a><span style="font-weight: normal;">.</span> Apa itu Hukum Bernoulli?</p>
<p style="text-align: justify;">Hukum Bernoulli adalah hukum yang <span style="font-weight: bold;">berlaku untuk fluida dinamis</span>. Ingat, ya, fluida <span style="font-weight: bold;">bukan berarti air, tetapi zat yang bisa mengalir</span>. Ini berarti, gas juga termasuk ke dalamnya.</p>
<p><span style="background-color: #ffff04;"><img decoding="async" style="width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Rumus%20Hukum%20Bernoulli.jpg" alt="Rumus Hukum Bernoulli" width="600" /></span></p>
<p style="text-align: justify;">Tunggu. Jangan stres dan takut dulu melihat rumus di atas. Meski terlihat mengintimidasi, sejatinya, rumus tersebut banyak kita terapkan di kehidupan sehari-hari, lho! Berikut adalah <strong>5 contoh penerapan Hukum Bernoulli di kehidupan sehari-hari</strong><span style="font-weight: normal;">:</span></p>
<p style="text-align: justify; font-weight: bold;">Baca juga: <a href="/blog/momen-inersia" rel="noopener">Cara Gampang Memahami Konsep Momen Inersia</a></p>
<h2 style="text-align: justify; font-size: 20px;"><span style="color: #2eb5c0;"><strong>1. Tangki Air Bocor</strong></span></h2>
<p><span style="background-color: #ffff04;"><img decoding="async" style="width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Contoh%20Penerapan%20Hukum%20Bernoulli.jpg" alt="Contoh Penerapan Hukum Bernoulli" width="600" /></span></p>
<p style="text-align: justify;">Di rumah kamu pasti ada tangki air seperti itu. Bayangin, deh, jika suatu hari, orangtua kamu memanggil kamu dan minta untuk menguras tangki itu. Apa yang kamu lakukan? Ya, betul. Nangis kejer. Oke. Bercanda. Kamu hanya tinggal membuka lubang kecil di bagian bawah tangki supaya airnya keluar kan.</p>
<p style="text-align: justify;">Masalahnya, berapa lama kamu harus menunggu sampai si air habis?</p>
<p style="text-align: justify;">Kita bisa mencari tahu hal tersebut menggunakan Hukum Bernoulli. Dengan persamaan Bernoulli, kamu bisa mencari tahu berapa kecepatan air yang keluar dari lubang kecil itu.</p>
<p style="text-align: justify;">Syaratnya satu: buka tutup tangki air di bagian atas. Jika tangki tersebut tidak punya tutup dan ada bagian yang berlubang, artinya, kedua bagian itu akan langsung ‘bertemu’ dengan atmosfer di udara. Maka, tekanan yang ada di bagian itu, <strong>sama-sama berasal dari tekanan </strong><span style="font-weight: bold;">atmosfer</span>. Sehingga, rumus Bernoulli-nya bisa kita ubah menjadi:</p>
<p><img decoding="async" style="width: 600px; display: block; margin: 0px auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/bernoulli%20tanpa%20tekanan%20-.jpg" alt="bernoulli tanpa tekanan" width="600" /></p>
<p style="text-align: justify;">Nah, karena luas permukaan bagian atas tangki jauh lebih besar daripada luas permukaan lubang di bawah. Artinya, air yang berada di bagian atas tangki tidak banyak bergerak. Maka, kita bisa <span style="font-weight: bold;">anggap kecepatannya (v) sama dengan nol</span>. Jadi, kita bisa ganti lagi rumus Bernoullinya menjadi:</p>
<p><img decoding="async" style="width: 500px; display: block; margin: 0px auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/bernoulli%20tanpa%20kecepatan%20-.jpg" alt="bernoulli tanpa kecepatan" width="500" /></p>
<p style="text-align: justify;">Kalau sudah begini, kita bisa <span style="font-weight: bold;">hilangkan massa jenisnya</span> menjadi:</p>
<p><img decoding="async" style="width: 450px; display: block; margin: 0px auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/bernoulli%20tanpa%20kerapatan%20-.jpg" alt="bernoulli tanpa massa jenis" width="450" /></p>
<p style="text-align: justify;">Sekarang persamaannya jadi sederhana banget, kan? Hore!</p>
<p style="text-align: justify;">Eits, nggak cuma sampai di situ. Kalau kamu mau iseng, kamu bisa tambahkan keran di lubang bagian bawah yang menghadap ke atas. Lalu liat yang terjadi. Tinggi air yang keluar dari keran akan sama dengan tinggi air di dalam tangki!</p>
<p style="text-align: justify;"><strong>Baca juga: <a href="/blog/hantu" rel="noopener">Apakah Hantu Itu Benar-Benar Ada?</a></strong></p>
<h2 style="text-align: justify; font-size: 20px;"><span style="color: #2eb5c0;"><strong>2. Mengendarai Sepeda Motor</strong></span></h2>
<p style="text-align: justify;">Siapa yang pernah liat orang naik motor, lalu bagian belakang bajunya terbang dan menggembung? Hal itu juga membuktikan hukum Bernoulli, lho. Ketika kita mengendarai sepeda motor dalam keadaan ngebut, maka <span style="font-weight: normal;">kecepatan udara di bagian depan dan samping tubuh kamu besar</span>. Sebaliknya, kecepatan udara di belakang tubuh kamu lebih kecil. Alhasil, <span style="font-weight: normal;">tekanan udara di belakang tubuh kamu menjadi lebih besar daripada di depan</span>. Nah, <span style="font-weight: bold;">perbedaan tekanan udara</span> inilah yang membuat udara mendorong baju kamu ke belakang, sehingga menjadi menggembung.</p>
<h2 style="text-align: justify; font-size: 20px;"><span style="color: #2eb5c0;"><strong>3. Menekan Selang Air</strong></span></h2>
<p><span style="background-color: #ffff04;"><img decoding="async" style="width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Menekan%20Selang%20Air.jpg" alt="Menekan Selang Air" width="600" /></span></p>
<p style="text-align: justify;">Nah, hal yang satu ini pasti sering banget kamu liat deh. Kalau lagi nyiram tanaman, pasti kita suka ‘menekan’ ujung selang air biar pancuran airnya semakin jauh. Nah, hal ini berkaitan dengan persamaan Bernoulli. Kamu pasti ingat dong bagaimana <strong>semakin kecil luas permukaan suatu benda, maka akan semakin besar <a href="/blog/tekanan-hidup" rel="noopener">tekanannya</a></strong><span style="font-weight: normal;">.</span></p>
<p style="text-align: justify;">Sekarang coba kamu angkat selang air, lalu arahkan ke tanganmu. Setelahnya, letakkan jempol kamu hingga setengah lubangnya tertutupi. Sesuai dengan hukum Bernoulli, dengan membuat luas permukaannya mengecil (menaruh jempol setengah menutup lubang) maka kecepatan air yang keluar dari selang akan lebih kencang sehingga menyebabkan energi kinetiknya akan semakin besar. Makanya, jadi lebih sakit kalau kena tangan.</p>
<h2 style="text-align: justify; font-size: 20px;"><span style="background-color: #ffffff; color: #2eb5c0;"><strong>4. Gaya Angkat Pesawat</strong></span></h2>
<p style="text-align: justify;">Pernah merhatiin bentuk sayap pesawat? Ketika mau terbang, pilot akan mengubah mode sayap sehingga membengkok ke bawah. Iya, hal ini bukan buat keren-kerenan aja kok. Karena pesawat benaran nggak bisa di ‘HAH! HAH!’-in kayak kita bikin pesawat kertas, maka desainnya harus diperhitungkan dengan seksama. Makanya, untuk bisa terbang, para pendesain pesawat memperhitungkan Hukum Bernoulli. Coba, deh, ingat kembali rumus Bernoulli. Pasti akan terlihat kalau <strong>kecepatan dan tekanan itu berbanding terbalik</strong><span style="font-weight: normal;">.</span> Artinya, kalau kecepatannya tinggi, maka tekanannya akan rendah.</p>
<p style="text-align: justify;">Berdasarkan hal itu, dibuatlah desain sayap pesawat yang bisa diubah-ubah modenya. Pada saat <em>take off, </em>pilot akan mengubahnya menjadi ‘bengkok’ ke arah bawah. Buat apa? Ya, supaya pada bagian atas, kecepatan udaranya tinggi. Alhasil, tekanan di bagian itu akan menjadi lebih rendah daripada di bawah pesawat. Saat <strong>tekanan udara di bagian bawah sayap lebih tinggi</strong>, maka si udara akan bisa ‘mengangkat’ pesawat dan dia bisa <em>take off </em>deh.</p>
<p style="text-align: justify; font-weight: bold;">Baca juga: <a href="/blog/fisika-kelas-11-elastisitas-zat-padat-dan-hukum-hooke" rel="noopener">Elastisitas Zat Padat dan Hukum Hooke</a></p>
<h2 style="text-align: justify; font-size: 20px;"><span style="color: #2eb5c0;"><strong>5. Cerobong Asap</strong></span></h2>
<p style="text-align: justify;">Seperti yang udah kita bahas di atas pada konsep motor dan pesawat, Hukum Bernoulli menyatakan hubungan kecepatan dan tekanan berbanding terbalik. Hal ini terdapat pada cerobong asap pusat industri.</p>
<p style="text-align: justify;">Cerobong asap yang baik akan tersambung ke ruangan yang tertutup. Karena ruangan itu tertutup, maka tidak ada udara yang berhembus, yang menyebabkan tekanannya menjadi besar. Sehingga, secara tidak langsung asap akan ‘tertekan’ naik ke atas cerobong.</p>
<p style="text-align: justify;">Begitu juga pada bagian atas cerobong. Karena bagian atas cerobong didesain terbuka, maka angin di luar bangunan akan meniup bagian atas cerobong, sehingga tekanan udara di sekitarnya menjadi kecil dan asap bisa terbuang keluar.</p>
<p style="text-align: center;">—</p>
<p style="text-align: justify;">Bagaimana, teman-teman? Sekarang sudah tahu kan, apa saja penerapan Hukum Bernoulli pada kehidupan sehari-hari? Ternyata banyak kegiatan sehari-hari yang menggunakan hukum ini, ya! Kalau kamu tahu contoh lainnya, coba tulis di kolom komentar, dong! Kalau kamu suka materi seperti ini dan ingin menontonnya dalam bentuk video beranimasi, langsung aja meluncur ke <a href="https://ruangguru.onelink.me/blPk/eaff0eb9" target="_blank" rel="noopener"><strong>ruangbelajar</strong></a><span style="font-weight: normal;">!</span></p>
<p style="text-align: center;"><strong><a class="rg-cta" style="text-align: center;" href="https://link.ruangguru.com/blPk/eaff0eb9" target="_blank" rel="noopener"><img fetchpriority="high" decoding="async" src="https://cdn-web.ruangguru.com/landing-pages/assets/cta/0ec4a2df-db2e-4ae1-8473-692756dcb684.jpeg" alt="IDN CTA Blog ruangbelajar Ruangguru" width="822" height="200" /></a></strong></p>
<p style="text-align: left;"><strong>Sumber Gambar:</strong></p>
<p style="text-align: left; font-weight: normal;">GIF ‘Tangki Air’ [Daring]. Tautan: https://www.youtube.com/c/crashcourse/videos (Diakses: 22 Oktober 2018)</p>
<p style="text-align: left; font-weight: normal;">GIF ‘Berkendara dengan Sepeda Motor’ [Daring]. Tautan: https://tenor.com/view/the-place-beyond-the-pines-gif-11471857 (Diakses: 22 Oktober 2018)</p>
<p style="text-align: left; font-weight: normal;">GIF ‘Pesawat Terbang’ [Daring]. Tautan: https://www.youtube.com/c/Lesics/videos (Diakses: 22 Oktober 2018)</p>
<p style="text-align: left; font-weight: normal;">GIF ‘Cerobong Asap Pabrik’ [Daring]. Tautan: https://img-s1.onedio.com/id-5b73f0f8a694e35c1a4ec2e6/rev-0/w-900/h-592/f-gif/s-c1e8428c6c0fcb6077b6a58801fa9c91c6f62e3a.gif (Diakses: 22 Oktober 2018)</p>
<p style="text-align: left;"><em><strong>Artikel ini telah diperbarui pada 21 September 2021.</strong></em></p>
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<div class="d-lg-none text-center">
<nav class="footer-menu social">
<p class="title">Ikuti Kami</p>
<a target="_blank" href="https://www.instagram.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/instagram.png" loading="lazy" alt="Logo Instagram Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.facebook.com/ruanggurucom/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/facebook.png" loading="lazy" alt="Logo Facebook Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://twitter.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/twitter.png" loading=" lazy" alt="Logo Twitter Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.youtube.com/ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/youtube.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/youtube.png" loading=" lazy" alt="Logo Youtube Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.linkedin.com/company/ruangguru-com">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/linkedin.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/linkedin.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/linkedin.png" loading=" lazy" alt="Logo LinkedIn Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.tiktok.com/@ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/tiktok.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/tiktok.png" loading=" lazy" alt="Logo TikTok Footer" width="32px" height="32px" />
</picture>
</a>
</nav>
</div>
<p class="footer-copyright">
© 2026 All Rights Reserved PT. Ruang Raya Indonesia
</p>
</div>
<style>
.bantuan-container {
position: relative;
}
.bantuan-element {
position: fixed;
z-index: 999;
display: flex;
align-items: flex-end;
justify-content: flex-end;
cursor: pointer;
transition: all 0.6s ease;
}
.bantuan-top {
bottom: 11rem;
right: 2rem;
}
.bantuan-bottom {
bottom: 2rem;
right: 2rem;
}
.bantuan-top-2 {
bottom: 15rem;
right: 2rem;
}
.bantuan-top-3 {
bottom: 19rem;
right: 2rem;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 2rem;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 2rem;
}
@media (min-width: 768px) {
.bantuan-element img {
width: auto;
transition: all 0.4s ease;
}
.bantuan-top img {
width: 140px;
}
.bantuan-bottom img {
width: 140px;
}
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 140px;
}
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 140px;
}
.bantuan-element.clicked {
bottom: 9rem;
right: 2.5rem;
}
.bantuan-element.clicked img {
width: auto;
height: 64px;
}
}
@media (max-width: 767px) {
.bantuan-top {
bottom: 8rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom {
bottom: 2rem;
right: 1.25rem;
align-items: center;
}
.bantuan-top-2 {
bottom: 12rem;
right: 1rem;
align-items: center;
}
.bantuan-top-3 {
bottom: 16rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 1.25rem;
align-items: center;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 1.25rem;
align-items: center;
}
.bantuan-element img {
width: auto;
}
.bantuan-top img,
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 96px;
}
.bantuan-bottom img,
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 96px;
}
}
.bantuan-element:hover {
transform: scale(1.05);
}
.bantuan-element img {
max-width: 100%;
height: auto;
}
</style>
<div id="bantuan-divs-container" style="position: relative" data-product="ruangguru" data-table="rg_floating_icon"></div>
<script>
class FloatingDivsComponent {
constructor(product = 'ruangguru', table = 'rg_floating_icon') {
this.container = document.getElementById('bantuan-divs-container');
this.floatingElements = [];
this.product = product;
this.table = table;
// Configuration
this.config = {
baseApiUrl: 'https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/rg_banner/views/',
apiKey: 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
maxElements: 2,
zIndexBase: 100,
};
// Build dynamic API URL based on table parameter
this.config.apiUrl = this.buildApiUrl();
this.init();
}
buildApiUrl() {
const baseUrl = this.config.baseApiUrl;
const tableName = this.table || 'rg_floating_icon';
const queryParams =
'offset=0&limit=99999&sort=rankPosition&where=(type,eq,floating)~and(showIn,anyof,blog)~and(hide,is,false)~and(product,eq,' +
this.product +
')&nested%5Bcta%5D%5Bfields%5D=Id,name,ctaId,imageUrl,ctaLink,targetUrl';
return `${baseUrl}${tableName}?${queryParams}`;
}
async init() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to initialize floating divs component:', error);
}
}
async fetchFloatingElements() {
try {
const options = {
method: 'GET',
headers: {
'xc-token': this.config.apiKey || 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
},
};
const urlNoco = this.config.apiUrl;
const response = await fetch(urlNoco, options);
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
const data = await response.json();
this.floatingElements = this.processApiResponse(data);
} catch (error) {
console.error('Error fetching floating elements:', error);
throw error;
}
}
processApiResponse(data) {
if (!data || !data.list || !Array.isArray(data.list)) {
return [];
}
console.log(data.list);
// Ensure we only get maximum 2 elements
const limitedElements = data.list.slice(0, this.config.maxElements);
return limitedElements;
}
renderFloatingElements() {
if (!this.container || this.floatingElements.length === 0) {
return;
}
// Additional safeguard: ensure we never render more than maxElements
const elementsToRender = this.floatingElements.slice(0, this.config.maxElements);
// Clean up existing elements and their event listeners
this.cleanupExistingElements();
// Clear existing content
this.container.innerHTML = '';
elementsToRender.forEach((element, index) => {
const floatingDiv = this.createFloatingDiv(element, index);
this.container.appendChild(floatingDiv);
});
}
cleanupExistingElements() {
// Clear existing elements (no need for event listener cleanup with CSS approach)
const existingElements = this.container.querySelectorAll('[data-floating-element]');
existingElements.forEach(element => {
element.remove();
});
}
createFloatingDiv(element, index) {
const div = document.createElement('div');
const cta = element.cta[0]; // Use the first CTA
// Add data attribute for cleanup tracking
div.setAttribute('data-floating-element', 'true');
// Apply CSS classes based on rankPosition
const positionClass = this.getPositionClass(element.rankPosition, index);
div.className = `bantuan-element ${positionClass}`;
div.style.zIndex = this.config.zIndexBase + index;
// Create the link and image
const link = document.createElement('a');
link.href = 'https://cta.ruangguru.com/' + cta.ctaId || '#';
link.target = '_blank';
// Add tracking attributes
link.setAttribute('data-tracking-event-type', 'landing_page__core__item_click');
link.setAttribute(
'data-tracking-context',
JSON.stringify({
product_name: this.product,
cta_action: 'redirection',
cta_action_detail: link.href,
item_type: 'floating',
item_name: element.name || 'Floating element',
item_category: 'payment',
item_position: index,
item_serial: null,
section_type: 'floating_item',
section_position: 'body',
section_name: 'floating_item',
})
);
const img = document.createElement('img');
img.src = element.imageUrl + '?h=200&convert=webp';
img.alt = element.name || 'Floating element';
img.loading = 'lazy';
// Add click tracking
link.addEventListener('click', () => {
this.trackClick(element, cta);
});
link.appendChild(img);
div.appendChild(link);
return div;
}
getPositionClass(rankPosition, index) {
// Define positioning classes based on rankPosition
if (rankPosition === 1) {
return 'bantuan-top'; // Top position
} else if (rankPosition === 2) {
return 'bantuan-bottom'; // Bottom position
} else {
// For additional elements, distribute them evenly
return `bantuan-${index % 2 === 0 ? 'top' : 'bottom'}-${Math.floor(index / 2) + 1}`;
}
}
trackClick(element, cta) {
// Implement click tracking logic here
console.log('Floating element clicked:', {
elementId: element.Id,
elementName: cta.name,
ctaId: cta.ctaId,
targetUrl: cta.targetUrl,
});
}
// Public method to manually refresh
async refresh() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to refresh floating elements:', error);
throw error;
}
}
// Public method to get current floating elements
getFloatingElements() {
return [...this.floatingElements];
}
}
// Initialize the component when DOM is ready
document.addEventListener('DOMContentLoaded', () => {
// Get product and table parameters from data attributes
const container = document.getElementById('bantuan-divs-container');
const product = container.getAttribute('data-product') || 'ruangguru';
const table = container.getAttribute('data-table') || 'rg_floating_icon';
new FloatingDivsComponent(product, table);
});
// Export for use in other modules if needed
if (typeof module !== 'undefined' && module.exports) {
module.exports = FloatingDivsComponent;
}
</script> <div id="wp-install-nudge" style="
position: fixed;
bottom: 0rem;
right: 0;
z-index: 999;
cursor: pointer;
"></div>
<script>
(function (w, d, s, o, f, js, fjs) {
w['Sales-Nudge-Widget'] = o; w[o] = w[o] || function () { (w[o].q = w[o].q || []).push(arguments) };
js = d.createElement(s), fjs = d.getElementsByTagName(s)[0];
js.id = o; js.src = f; js.async = 1; fjs.parentNode.insertBefore(js, fjs);
}(window, document, 'script', 'wpInstallNudge', 'https://cdn-web-2.ruangguru.com/sales-nudge/6198a95130/dist/widget.js'));
wpInstallNudge('init', { targetElementId: 'wp-install-nudge', clientTarget: 'ruangguru_blog' });
</script>
<script>
// note: disabled due to auto reload page
// var lastScrollTop = 0;
// $(window).scroll(function(event){
// var st = $(this).scrollTop();
// if (st > lastScrollTop){
// $('#wp-install-nudge').slideDown( "slow", function() {});
// } else {
// $('#wp-install-nudge').slideUp( "slow", function() {});
// }
// lastScrollTop = st;
// });
// $(document).ready(function () {
// $("#wp-install-nudge").hide();
// });
$('#wp-install-nudge').click(function(){
Analytics.track("promotion__install_nudge__click",
{
user_email: "ruangguru@blog.com",
cta_link: widgetData.dataConfig.target_link
}).catch((err) => {
console.log("tracker error", err);
});
});
</script>
</footer>
<div id="__next"></div>
<script type="speculationrules">
{"prefetch":[{"source":"document","where":{"and":[{"href_matches":"\/blog\/*"},{"not":{"href_matches":["\/blog\/wp-*.php","\/blog\/wp-admin\/*","\/blog\/wp-content\/uploads\/*","\/blog\/wp-content\/*","\/blog\/wp-content\/plugins\/*","\/blog\/wp-content\/themes\/ruangguru\/*","\/blog\/*\\?(.+)"]}},{"not":{"selector_matches":"a[rel~=\"nofollow\"]"}},{"not":{"selector_matches":".no-prefetch, .no-prefetch a"}}]},"eagerness":"conservative"}]}
</script>
<script>
async function getCtaDetails(ctaIds) {
const endpoint =
" https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/CTA/views/CTA?offset=0&limit=10&where=(ctaId,in," + ctaIds.toString() + ")";
try {
const response = await fetch(endpoint, {
headers: {
"xc-token": "-hG2nBDJzSj0agSgNtcJx97M4F02y54nUMoY6plJ",
},
});
const data = await response.json();
const ctaList = data?.list || [];
const ctaMap = new Map();
for (const ctaData of ctaList) {
ctaMap.set(ctaData.ctaId, ctaData);
}
return ctaMap;
} catch (error) {
console.error("Error fetching CTA details:", error);
return new Map();
}
}
async function replaceCTA() {
const regex = /{{cta\((‘(.*?)’|“(.*?)”)\)}}/g;
const bodyHTML = document.body.innerHTML;
const matches = Array.from(bodyHTML.matchAll(regex));
const ctaIds = matches.map((match) => {
let ctaId = match[2] ?? match[3];
return ctaId;
});
const ctaMap = await getCtaDetails(ctaIds);
const replacedHTML = bodyHTML.replace(regex, (match, _inner, ctaId1, ctaId2) => {
const ctaId = ctaId1 ?? ctaId2;
const ctaData = ctaMap.get(ctaId);
if (ctaData) {
return `<a href="https://cta.ruangguru.com/${ctaData.ctaId}" target="_${ctaData.targetType}" style="position:relative;display:inline-block;">
<img src="${ctaData.imageUrl}" loading="lazy" alt="${ctaData.altText}" />
</a>`;
} else {
return match;
}
});
document.body.innerHTML = replacedHTML;
}
</script>
<meta name="author" content="Ruangguru Tech Team">
<!-- Google Tag Manager (noscript) -->
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-PVNLZFT" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<!-- Tracker -->
<script type="text/javascript" src="https://cdn-web-2.ruangguru.com/landing-page-web/public/staticpages/global-assets/js/cta.js"></script>
<script src="https://unpkg.com/@dotlottie/player-component@latest/dist/dotlottie-player.mjs" type="module"></script>
</body>
</html>