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Question 6193
NEET Physics · Hard

System of Particles & Rotational Motion: Angular Momentum Mixed MCQ

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Angular Momentum MixedHardQuestion 6193

Question

A disc (I₁=2 kg·m², ω=10 rad/s) and ring (I₂=4 kg·m², at rest) on same axis. After coupling, ω:
  1. A
    5 rad/s
  2. B
    3.33 rad/s
    Correct
  3. C
    6.67 rad/s
  4. D
    2 rad/s

Correct answer

3.33 rad/s

Explanation

L = 2×10 = 20 kg·m²/s. ω = 20/(2+4) = 20/6 = 3.33 rad/s.

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