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A thin circular ring of mass m and radiu...

A thin circular ring of mass `m` and radius `R` is rotating about its axis with a constant angular velocity `omega`. Two objects each of mass `M` are attached gently to the opposite ends of a diameter of the ring. The ring now rotates with an angular velocity `omega' =`

A

`(omega(M-2m))/(M+2m)`

B

`(omegaM)/(M+2m)`

C

`(omegaM)/(M+m)`

D

`(omega(M+2m))/(M)`

Text Solution

Verified by Experts

The correct Answer is:
B
`L_(i)=(Mr^(2))omega`, `L_(f)=(Mr^(2)+2mr^(2))omega.`
`L_(i)=L_(f)impliesomega.=(Momega)/(M+2m)`
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