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A uniform rod AB of length l and mass...

A uniform rod AB of length l and mass m is free to rotate about point A. The rod is released from rest in the horizontal position. Given that the moment of inertia of the rod about A is ` (ml^ 2 ) / ( 3 )`, the initial angular acceleration of the rod will be

A

`(3g)/(2l)`

B

`(2g)/(3l)`

C

`mg""l/2`

D

`3/2"gl"`

Text Solution

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The correct Answer is:
B
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MOTION-ROTATIONAL MOTION -Exercise - 3 ( Section-A )
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  18. A small mass attached to a string rotates on a frictionless table top ...

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