The bob of a pendulum | CIRCULAR MOTION | JEE-Main 2026

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Question

The bob of a pendulum was released from a horizontal position. The length of the pendulum is 10 m . If it dissipates 10\% of its initial energy against air resistance, the speed with which the bob arrives at the lowest point is [Use, g: $10 \mathrm{~ms}^{-2}$ ]

Select the correct option:

A

$6 \sqrt{5} \mathrm{~ms}^{-1}$

B

$5 \sqrt{6} \mathrm{~ms}^{-1}$

C

$5 \sqrt{5} \mathrm{~ms}^{-1}$

D

$2 \sqrt{5} \mathrm{~ms}^{-1}$

✓ Correct! Well done.

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