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A body is moving in a vertical circle su...

A body is moving in a vertical circle such that the velocities of body at different points are critical. The ration of velocities of body at angular displacements `60^@` and `120^@` from lowest point is

A

`sqrt(5) : sqrt(2)`

B

`sqrt(3) : sqrt(2)`

C

`sqrt(3) : 1`

D

`sqrt(2) : 1`

Text Solution

Verified by Experts

The correct Answer is:
D

`v = sqrt(gR(3+2 costheta)) rArr(v_(1))/(v_(2)) = sqrt((3+2costheta_(1))/(3+2 costheta_(2)))`.
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