Question

For the same total mass which of the following will
have the largest moment of inertia about an axis
passing through the centre of mass and
perpendicular to the plane of the body?
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Answer 1

Answer:

So among all options four rods forming square of side 2a has highest moment of inertia of 4ma2/3 about an axis passing through its center of mass and perpendicular to the plane of body.