Q. The maximum angular displacement of a simple pendulum of length is . Find the maximum kinetic energy of a bob of mass .

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A

B

C

D

Solution:

When pendulum passes through mean position, then its kinetic energy will be maximum.

So, by conservation of mechanical energy from A to B

i.e. ............ (i)
By diagram, ............ (ii)
By equations (i) and (ii), we get

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