When will the motion of a simple pendulum be simple harmonic

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Payal Gupta | Contributor-Level 10

7 months ago

This is a multiple choice answer as classified in NCERT Exemplar

The bob is displaced through some angle

The restoring force $τ = - m g s i n θ$ if $s i n θ$ is small then it is $θ$ only.

$τ \approx - m g θ$

So torque is directly proportional to angle.

So it clear from the above equation that its period will be harmonic

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Physics NCERT Exemplar Solutions Class 11th Chapter Fourteen 2025

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