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3.
Jika momen inersia katrol = I = β dan tali ditarik dengan gaya tetap F, maka nilai F setara
dengan….
A. F = α ⋅ β ⋅ R
B. F = α ⋅ β ⋅ R
2
C. F = α ⋅ (β ⋅ R)
– 1
D. F = α ⋅ β ⋅ (R)
– 1
E. F = R ⋅(α ⋅ β ) – 1
Pembahasan
Diketahui :
Gerak rotasi
Σ τ = I α
dimana
τ adalah momen gaya
I = momen inersia
α = percepatan sudut
Jawab:
Σ τ = I α
F ċ R = β ⋅ α
F = (β ⋅ α) : R
F = β ⋅ α R = α ⋅ β ⋅ R
−1
−1
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