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The bob of a simple pendulum of mass 100 g is oscillating with a time period of 1.42 s. If the bob is replaced by another bob of mass 150 g but of same radius. The new time period is

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2.48 s

0.71 s

1.42 s

1.78 s

answer is C.

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Detailed Solution

$m_{1} = 100 \times 10^{- 3} kg,T = {1.42s,m}_{2} = 150 g$ time period is independent on mass of the bob

$∴ T_{new} = 1.42 s$

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