Q .     A thin uniform rod of length `l` and mass `m` is swinging freely about a horizontal axis passing through its end. Its maximum angular speed is `omega`. Its centre of mass rises to a maximum height of

JEE 2009
A

`1/6 (l^2 omega^2) /g`

B

` 1/2 (l^2 omega^2) /g`

C

`1/3 (l^2 omega^2) /g`

D

`1/6 (l omega) /g`

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