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A stone is fastened to one end of a stri...

A stone is fastened to one end of a string and is whirled in a vertical circle of radius R. Find the minimum speed the stone can have at the highest point of the circle.

A

`Rg`

B

`(Rg)^(2)`

C

`R//g`

D

`sqrtRg`

Text Solution

Verified by Experts

The correct Answer is:
D
At higest point `(mv^(2))/(R) = mg implies v = sqrt(gR)`
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