A man measures time period of a pendulum

Asked by admin @ 31/08/2021 in Physics viewed by 298 People

A man measures time period of a pendulum (T) in stationary lift. If the lift moves upward with acceleration g/4, then new time period will be......

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Answered by admin @ 31/08/2021

The time period of a pendulum when acceleration present is given by

$t = 2\pi \sqrt{ \frac{l}{g + a} }$

here a= g/4
therefore g+a becomes
5g/4

there for T new = 2/√5x T

we took g+a as acceleration is upwards it would be negative if acceleration is downwards.

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