Question

let I1 and I 2 be the moment of inertia of two bodies of identical geometrical shape , the first made of aluminium and second of Iron , then​

Answer 1

Let d be the density of the material and V,R be the volume and radius respectively.

THen. the moment of inertia of the body is given as:

I=KMR²

The mass of the body is also written as the product of its density and volume.

∴I=KdVR²

where K is a constant number.

For same identical geometrical shape, I∝d Now as d

iiro >d

aluminium

⟹I² >I¹

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