AP Physics 1mediummcq1 pt
A disk of I = 0.50 kg·m² spinning at 6.0 rad/s is acted on by a braking torque of 1.5 N·m. The time to stop is
A.2.0 s
B.4.0 s
C.1.0 s
D.9.0 s
Explanation
Core Concept
α = τ/I = 3.0 rad/s²; t = ω/α = 6.0/3.0 = 2.0 s.
Correct Answer
A2.0 s
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