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JEE PHYSICS MCQ: SYSTEM OF PARTICLES

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Let

I_A

and

I_B

be the moments of inertia of two solid cylinders of identical geometrical shape and size about their axes, the first made of aluminium and the second of iron.

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Correct option: A

I_A < I_B

Option A (

I_A < I_B

) is correct because iron has a higher density than aluminum, resulting in a higher mass and thus a higher moment of inertia for the same shape and size.

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\left( {rad\,{s^{ - 2}}} \right)