A body of mass m is revolving along a ve...

A body of mass m is revolving along a vertical circle of radius r such that the sum of its kinetic speed of the body at the highest point is `sqrt2 rg` then the speed of the body at the lowest point is

`sqrt(4 gr) `

`sqrt (6 gr)`

`sqrt (2gr)`

`sqrt (gr)`

Text Solution

Verified by Experts

The correct Answer is:

`v_(b)^(2)-v_(h)^(2)=4 gr`
`v_(b)^(2)-2gr=4grimpliesv_(b)=sqrt(6 gr)`.

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