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m = M
a₁ = M/4, F₁ = 4 N
a₂ = M/3, F₂ = ___ ?
Hukum II Newton:
F = m a
atau
m = F / a
Pada kedua keadaan, massa benda tetap
m = m
F₁ / a₁ = F₂ / a₂
F₂ = (a₂/a₁) F₁
F₂ = [(M/3) / (M/4)] · (4 N)
F₂ = ⁴/₃ · (4 N)
F₂ = ¹⁶/₃ = 5¹/₃ N ← jawaban