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There is a ring or mass m and radius R i...

There is a ring or mass m and radius R is pivoted at a point O on its periphery. It is free to rotate about an axis perpendicular to its plane. What is the period of ring?

A

`T=2pi(((R)/(g)))`

B

`T=2pisqrt(((2R)/(g)))`

C

`T=pisqrt(((2R)/(g)))`

D

`T=2pisqrt(((3R)/(g)))`

Text Solution

Verified by Experts

The correct Answer is:
B
d= R and l = `2mR^(2)`
`because" "T=2pisqrt([(l)/(mgd)])T=2pisqrt([(2mR^(2))/(mgR)])`
`rArr" "T=2pisqrt([(2R)/(g)])`
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