Four point masses of 3.0 kg each are arranged in a square on massless rods. The length of a side of the square is 0.50 m. What is the rotational inertia for rotation about an axis
(a) Passing through masses B and C?
(b) Passing through masses A and C?
(c) Passing through the center of the square and perpendicular to the plane of the square?

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0.50 m 0.50 m 0.50 m 0.50 m 0.50 m 0.50 m