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JEE Physics · Medium

Simple Harmonic Motion: Coupled Oscillations MCQ

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Coupled OscillationsMediumQuestion 31146

Question

Two identical pendulums coupled by a spring: normal modes of oscillation are:
  1. A
    Only in phase
  2. B
    Only out of phase
  3. C
    Both in-phase and anti-phase modes
    Correct
  4. D
    No oscillation possible

Correct answer

Both in-phase and anti-phase modes

Explanation

Coupled pendulums have two normal modes: symmetric (in-phase, spring unstretched) and antisymmetric (anti-phase, spring stretched). Complex motions are superposition of these.

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