alleryTorque on a body produces angular acceleration. For tau = 20 N m and I = 5 kg m², alpha equals:
A4 rad/s²
B100 rad/s²
C20 rad/s²
D5 rad/s²
Answer & Solution
Correct answer: A. 4 rad/s²
tau = I × alpha → alpha = tau/I = 20/5 = 4 rad/s².
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