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Verified answer
Diketahui :m = 20 kg
r = 40 cm = 0.4 m
F = 20 N
momen inersia bola pejal = 2/5
α = ?
T = I. α
F. r = I.α
20.0.4 = 2/5.α
8 = 2/5.α
8.5/2 = α
20 rad/s² = α