Intro to Moment of Inertia Video Lessons

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Problem: You have two steel solid spheres. Sphere 2 has twice the radius of sphere 1.By what factor does the moment of inertia I2 of sphere 2 exceed the moment of inertia I1 of sphere 1? 

FREE Expert Solution

Moment of inertia:

I=mr2

I is proportional to mr2

Mass of a sphere:

m=Vρ=43πr3ρ

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Problem Details

You have two steel solid spheres. Sphere 2 has twice the radius of sphere 1.

By what factor does the moment of inertia I2 of sphere 2 exceed the moment of inertia I1 of sphere 1? 

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