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A body of mass 2 kg attached to a cord a...

A body of mass 2 kg attached to a cord and whirled in a verticle circle of radius 2 m. The minimum speed at the bottom of the circle so that the cord will not slacken when the body rounds the top of the circle will be `(g=10 m//s^(2))`

A

`10 m//s`

B

`6.3 m//s`

C

`7 m//s`

D

`5 m//s`

Text Solution

Verified by Experts

The correct Answer is:
A
`v=sqrt(5gr)=sqrt(5xx10xx2)=10m//s`
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