Question

Four pendulums A, B, C and D are suspended from the same elastic support as shown in figure. A and C are of the same length, while B is smaller than A and D is larger than A. If A is given a transverse displacement.

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A

D will vibrate with maximum amplitude.

B

C will vibrate with maximum amplitude.

C

B will vibrate with maximum amplitude.

D

All the four will oscillate with equal amplitude.

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Updated on : 2022-09-05
Solution
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Correct option is B)

Since length of pendulum A and C is same and , hence their time period is same and they will have same frequency of vibration. Due to it, a resonance will take place and the pendulum C will vibrate with maximum amplitude.

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