A body of mass m is rotated in a vertica...

A body of mass `m` is rotated in a vertical circle of radius `R` by means of light string. If the velocity of body is `sqrt(gR)` while it is crossing highest point of vertical circle then the tension in the string at that instant is

`2 mg`

`mg`

`(mg)/(2)`

Zero

Text Solution

Verified by Experts

The correct Answer is:

Tension at the highest point
`T = (m v^(2))/(r )-mg` where `v = sqrt(gr)`

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