- #1
Northbysouth
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Homework Statement
A uniform solid sphere has a moment of inertia I about an axis tangent to its surface. What is the moment of inertia of this sphere about an axis through its center?
Homework Equations
Ip = Icm + Md2
Isolid sphere = 2/5MR^2
The Attempt at a Solution
This is what I tried:
Ip = 2/5MR^2 + MR^2
=7/5MR^2
I'm not sure what I'm supposed to do with this. I know that the correct answer is 2/7 but I don't know how you get that answer.