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A simple pendilum with bob of mass m and...

A simple pendilum with bob of mass m and length l is held in position at an angle `theta` with t he verticle. Find its speed when it passes the lowest position.

A

`sqrt(2gl(1-cos theta))`

B

`sqrt(2gl)(1+cos theta)`

C

`sqrt(2glcos theta)`

D

`sqrt(2gl)`

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The correct Answer is:
A
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