ANSWERS: 1

I=mr^2 Let us call the mass of the smaller sphere m and it's radius r. The larger sphere has twice the mass and twice the radius. The moment of inertia of the smaller sphere is mr^2. The moment of inertia of the larger sphere is (2m)(2r)^2. So the ratio of moments of inertia is 8:1, or answer C. +4
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