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A uniform rod of length L is free to...

A uniform rod of length L is free to rotate in a vertical plane about a fixed horizontal axis through B . The rod begins rotating from rest from its unstable equilibrium position . When it has truned through an angle q its angular velocity w is given as :-

A

`sqrt((6g)/L ) sin theta `

B

`sqrt((6g)/L ) sin. theta /2 `

C

`sqrt((6g)/L ) cos theta /2 `

D

` sqrt((6g)/L ) cos theta `

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The correct Answer is:
B
gain in rotational K.E = loss in P.E
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