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A net torque of 20 N m acts on a body with I = 4 kg m^2. Its angular acceleration is
A0.2 rad/s^2
B5 rad/s^2
C80 rad/s^2
D16 rad/s^2
Answer & Solution
Correct answer: B. 5 rad/s^2
α = τ/I = 20/4 = 5 rad/s^2.
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