Four point masses, each of value m, are placed at the corners of a square ABCD

Four point masses, each of value m, are placed at the corners of a square ABCD of side l. The moment of inertia of this system about an axis through A and parallel to BD is

Options

(a) ml²
(b) 2ml²
(c) √ml²
(d) 3ml²

Correct Answer:

3ml²

Explanation:

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