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JEE Main 9 April 2017 Paper Solved Paper

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Question : 12

Total: 90

A block of mass 0.1 kg is connected to an elastic spring of spring constant 640Nm−1 and oscillates in a damping medium of damping constant 10−2kgs−1. The system dissipates its energy gradually. The time taken for its mechanical energy of vibration to drop to half of its initial value,is closest to :

[Main 9 April 2017]

2 s
3.5 s
5 s
7 s

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