JEE Physics · Medium

Simple Harmonic Motion: Compound Pendulum MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Compound PendulumMediumQuestion 31143

Question

A compound (physical) pendulum has time period T = 2π√(I/mgd) where d is:
  1. A
    Length of pendulum
  2. B
    Distance from pivot to centre of mass
    Correct
  3. C
    Radius of gyration
  4. D
    Length of string

Correct answer

Distance from pivot to centre of mass

Explanation

d = distance from the pivot (suspension point) to the centre of mass. I is moment of inertia about the pivot.