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Question 6188
NEET Physics · Hard

System of Particles & Rotational Motion: Torque Mixed MCQ

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Torque MixedHardQuestion 6188

Question

A thin rod (M, L) can rotate about pivot at one end. Horizontal rod released. Angular acceleration at start:
  1. A
    3g/2L
    Correct
  2. B
    g/L
  3. C
    3g/L
  4. D
    g/2L

Correct answer

3g/2L

Explanation

τ = Mg×L/2. I = ML²/3. α = τ/I = (MgL/2)/(ML²/3) = 3g/(2L) = 3g/2L.

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