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A uniform rod of mas m and length l is m...

A uniform rod of mas m and length `l` is made to stand at an angle of `60^(@)` with the vertical. What is the potential energy of the rod in this position?

A

mgl

B

`(mgl)/(2)`

C

`(mgl)/(3)`

D

`(mgl)/(4)`

Text Solution

Verified by Experts

The correct Answer is:
D
`h= (l)/(2) cos 60^(@) = (l)/(4)`
`PE= mgh= mg xx (l)/(4)`
`PE= (mgl)/(4)`
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