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A frictionless track ABCDE ends in a cir...

A frictionless track ABCDE ends in a circular loop of radius R. A body slides down the track from point A which is at height h = 5cm. Maximum value of R for a body to complete the loop successfully is

A

2 cm

B

`(10)/(3)`cm

C

`(15)/(4)`cm

D

`(18)/(3)`cm

Text Solution

Verified by Experts

The correct Answer is:
A
To complete the loop successfully `sqrt(2gh)=sqrt(5gR)`
`therefore" "R=(2h)/(5)=(2xx5)/(5)=2cm`
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