perhatikan gambar berikut!!! tolong di jawab yaaa.. besok kumpul..

Dik : mb = 800kg
g = 10m/s
Aa = 10^-1 m
Ab = 40m
Dit : ma...?
Penye :
F = m x g
F = 800 x 10
F = 8000 N

ma/Aa = mb/Ab
ma/10^-1 = 8000/40
ma = 8000 x 10^-1 / 40
ma = 800/40
ma = 20 kg




^_^