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Four small objects each of mass m are fi...

Four small objects each of mass m are fixed at the corners of a rectangular wire-frame of negligible mass and of sides a and b `(a gt b)`. If the wire frame is now rotated about an axis passing along the side of length b, then the amount of inertia of the system for this axis of rotation is

A

`2 ma^(2)`

B

`4 ma^(2)`

C

`2m(a^(2) + b^(2))`

D

`2m(a^(2) - b^(2))`

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