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Three rings, each of mass m and radius r...

Three rings, each of mass `m` and radius `r`, are so placed that they touch each other. Find the moment of inertia about the axis as shown in Fig.

A

`3 MR^(2)`

B

`(3)/(2) MR^(2)`

C

`5 MR^(2)`

D

`(7)/(2) MR^(2)`

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