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A rod of mass m and length L is pivoted ...

A rod of mass `m` and length `L` is pivoted at a point `O` and kept in horizontal position as shown in figure. Now it is released from this position so that it can rotates freely about the point `O` in downward direction. When it becomes vertical

A

30 cm

B

20 cm

C

38 cm

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A
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