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Four sphere of diameter 2a. And mass M a...

Four sphere of diameter 2a. And mass M are placed with their centres on the four corners of a square of side b. then the moment of inertia of the system about an axis along one of the sides of the square is

A

`4/5 Ma^2 + 2Mb^2`

B

`8/5 Ma^2 + 2 Mb^2`

C

`8/5 Ma^2`

D

`4/5 Ma^2 + 4 Mb^2`

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