physics quick and easy

Physics
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Two uniform solid spheres have the same mass, but one has twice the radius of the other. The ratio of the larger sphere's moment of inertia to that of the smaller sphere is

4

Mar 23rd, 2015

Moment of inertia of a solid sphere is (2/5)MR^2 

So do (2/5)*M1*(R1)^2 / [(2/5)*M2*(R2)^2] if M1 = M2 and R1 = 2*R2

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Mar 23rd, 2015

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