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A particle of mass m is fixed to one end...

A particle of mass `m` is fixed to one end of a light rigid rod of length `l` and rotated in a vertical circular path about its other end. The minimum speed of the particle at its highest point must be

A

`Zero`

B

`sqrt(gL)`

C

`sqrt((1.5gL)`

D

`sqrt(2gL)`

Text Solution

Verified by Experts

The correct Answer is:
A
`v^(2)=u^(2)-2gxx2L`
`v_(min)=0impliesu_(min)=sqrt(4gL)`
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