Two Ways to Find the Moment of Inertia for a Sphere

Rhett Allain
10 min readMay 15, 2023
Photo: Rhett Allain. Moment of Inertia for a solid sphere.

What is the moment of inertia and why would you wan to find it for a sphere? Will this even be fun? The answer to the last question — YES. Trust me, I’m going to make it fun.

What is the moment of inertia?

This is just a quick review. I mean, if you have read this far then I suspect you already have an idea about the moment of…

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Rhett Allain

Physics faculty, science blogger of all things geek. Technical Consultant for CBS MacGyver and MythBusters. WIRED blogger.