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A body is allowed to slide down a fr...

A body is allowed to slide down a frictionless inclined track under gravity from a height of 10 cm . The track ends in a circular loop of diameter D. The body is just able to complete the circular track , then the diameter of the track will be

A

`4cm`

B

`8 cm`

C

`6 cm`

D

`2 cm`

Text Solution

Verified by Experts

The correct Answer is:
B

`h= (Sr)/(2) therefore D= 2r = (4h ) /(5) = 8 cm `
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