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A simple pendulum performs simple harmon...

A simple pendulum performs simple harmonic motion about `x = 0` with an amplitude and time period T. The speed of the pendulum at `x = a/2` will be:

A

`(pia)/T`

B

`(3pi^2a)/T`

C

`(piasqrt3)/T`

D

`(piasqrt3)/2T`

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