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The string of a pendulum is horizontal. ...

The string of a pendulum is horizontal. The mass of the bob is m. Now the string is released. The tension in the string in the lowest position is -

A

mg

B

`mg [1 ((a)/(L))^(2)]`

C

`mg [1 + (a)/(2L)]^(2)`

D

`mg [1 + ((a)/(L))]^(2)`

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The correct Answer is:
B
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