A pendulum clock is running slow, In order to correct it, we should (a) reduce the amplitude of oscillation. (b) reduce the mass of the bob. (c) reduce the length of pendulum. (d) increase the length of pendulum.

Answer: (c). A slow clock means its period is too large. T = 2π√(l/g), so to decrease T the length must be reduced (mass and small amplitude do not affect T). So the answer is (c) reduce the length of pendulum.

A pendulum clock is running slow, In order to correct it, we should | MHT CET 2026 (15 Apr, Shift 2)

Q3MHT CET 2026 · 15 APR · SHIFT 2Easy

Simple Pendulum

A pendulum clock is running slow, In order to correct it, we should

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Answer: (c)

A slow clock means its period is too large.
$T = 2\pi\sqrt{\frac{l}{g}}$ , so to decrease $T$ the length must be reduced (mass and small amplitude do not affect $T$ ).
So the answer is (c) reduce the length of pendulum.

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