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Question 6159
NEET Physics · Hard

System of Particles & Rotational Motion: Angular Momentum MCQ

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Angular MomentumHardQuestion 6159

Question

A disc (I=0.5 kg·m², ω=4 rad/s). Braking torque of 1 N·m applied. Time to stop:
  1. A
    1 s
  2. B
    2 s
    Correct
  3. C
    4 s
  4. D
    0.5 s

Correct answer

2 s

Explanation

α = τ/I = 1/0.5 = 2 rad/s². t = ω/α = 4/2 = 2 s.

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