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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

`sqrt5 : sqrt 2`

B

`sqrt3 : sqrt 2`

C

`sqrt3 : 1`

D

`sqrt2 : 1`

Text Solution

Verified by Experts

The correct Answer is:
`(4)`
`v = sqrt(gR(3 + 2 cos theta)`
` Rightarrow v_(1)/v_(2) = sqrt((3+ 2 cos theta_(1))/(3 + 2 cos theta_(2))`
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