Question

7. Two circular iron discs are of the same thickness. The
diameter of A is twice that of B. The moment of inertia of
A as compared to that of B is
twice as large (2) four times as large
(3) 8 times as large (4) 16 times as large
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Answer 1

Answer:

(4)16 times as large

Explanation:

Moment of inertia depends upon the mass and square of the radius,since the diameter becomes twice radius also becomes twice which means its volume becomes 4 times so its mass becomes 4 times,so the moment of inertia becomes 16 times