Page 33 - PRODUK (LKPD PESAWAT SEDERHANA)
P. 33
Lembar Kerja Peserta Didik Berbasis Problem Based Learning
LATIHAN SOAL
Permasalahan 1
Perhatikan gambar berikut ini!
Jungkat-jungkit pada gambar termasuk pesawat sederhana jenis berapa? Berikan
alasannya! Sebutkan dua contoh benda yang ada di sekitar kamu yang
menggunakan konsep pesawat sederhana tersebut!
Jawab
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
Permasalahan 2
.................................................................................................................................
Seorang pekerja hendak menaikkan sebuah peti ke bak belakang truk menggunakan
.................................................................................................................................
bidang miring dengan tinggi 1 m dan panjang papan 2 m seperti pada gambar.
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
.................................................................................................................................
2
Jika massa peti 120 kg, dan percepatan gravitasi 10 m/s , tentukan:
a) gaya minimal yang diperlukan pekerja untuk menaikkan peti
b) keuntungan mekanik bidang miring
.................................................................................................................................
.................................................................................................................................
Pesawat Sederhana Untuk Kelas VIII SMP
29
.................................................................................................................................
.................................................................................................................................
