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PhysicsSHMMiscellaneousMedium2 minPYQ_2018

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Assertion : If a pendulum is suspended in a lift and lift is falling freely, then its time period becomes infinite. Reason : Free falling body has acceleration equal to acceleration due to gravity.

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Solution:

If a pendulum is suspended in a lift and lift is moving downward with some acceleration $a$ , then time period of pendulum is given by, $T = 2 π \frac{l}{g - a}$ In the case of free fall, $a = g$ then $T = \infty$ i.e., the time period of pendulum becomes infinite.

Stream:AIIMSSubject:PhysicsTopic:SHMSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2018

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