A body is mass m is rotating in a vertic...

A body is mass `m` is rotating in a vertical circle of radius 'r' with critical speed. The difference in its `K.E` at the top and at the bottom is

A

2 mgr

B

4 mgr

C

6 mgr

D

3 mgr

Text Solution

Verified by Experts

The correct Answer is:

A

`Delta K.E = (1)/(2) m(v_("bottom")^(2) - v_("top")^(2))`.

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