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A simple pendulum is hanging from the ro...

A simple pendulum is hanging from the roof of a trolley which is moving horizontally with acceleration g. If length of the string is L and mass of the bob is m, then time period of oscillation is

A

`2pisqrt(L/(gsqrt2))`

B

`2pisqrt(2L/g)`

C

`2pisqrt(L/(2g))`

D

`2pisqrt(L/g)`

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