Rotation Problem: Help Needed - PhysicsForums.com

[Ja4Coltrane]

I posted this in the introductory forum but I didn't get any response so I thought I would try here.

https://www.physicsforums.com/showthread.php?t=160200

Thanks!

 

[Dick]

Well, the moment of inertia of a hoop is M*R^2. So the moment of inertia of any portion of a hoop is also M*R^2 where M is the mass of that portion. Why are you making up problems, aren't there enough already? :)

 

[Ja4Coltrane]

But this hoop is not the same axis.

haha, I'm crazy, sorry.

 

[Dick]

Ok. My confusion suggests a picture might be nice. Everything else seems ok.