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mA = 100 kg
A₁ = 10 m²
A₂ = 5 m²
g = 10 m/s²
Ditanyakan:
mB = ...?
Dijawab:
F = W = m·g
= 100·10
= 1000 N
F1/A1 = F2/A2
1000/10 = F2/5
100 = F2/5
F2 = 100·5
F2 = 500 N
F = m·g
500 = m·10
m = 500/10
m = 50 kg (D)