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Question 30373
JEE Physics · Hard

Rigid Body Dynamics: Advanced — Precession MCQ

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Advanced — PrecessionHardQuestion 30373

Question

A gyroscope (spinning angular momentum L) in a gravitational field experiences torque τ. The rate of precession (angular velocity of precession Ω) is:
  1. A
    Ω = τ/L
    Correct
  2. B
    Ω = L/τ
  3. C
    Ω = τ×L
  4. D
    Ω = τL

Correct answer

Ω = τ/L

Explanation

Precession: dL/dt = τ, and |dL| = L dφ (for precession through angle dφ). So L × Ω = τ → Ω = τ/L.

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