Question

Four particles of masses 4 kg, 2 kg, 3 kg and 5 kg are respectively located at the four corners A, B, C and D of a square of side 1 m, as shown in the attached figure. Calculate the moment of inertia of the system about (i) an axis passing through the point of intersection of the diagonals and perpendicular to the plane of the square, (ii) the side AB, and (iii) the diagonal BD.

(Please help with the CORRECT ANSWER.)

Answer 1

See the image and i expect you would be able to draw the diagrams of the case 2 and 3.

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