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JEE PHYSICS MCQ: SYSTEM OF PARTICLES

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A mass of 10 kg connected at the end of a rod of negligible mass is rotating in a circle of radius 30 cm with an angular velocity of 10  rad/sec10\;rad/sec. If this mass is brought to rest in 10 sec by a brake, what is the magnitude of the torque applied
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Correct option: A
0.9 N−m0.9\,N - m
Option A (0.9 N-m) is correct because the torque is calculated using the moment of inertia and angular acceleration.

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