Can anyone explain this angular momentum problem?
It was on a test, and I want to know if I got it right.
A man of mass m is initially standing on a solid disk, a distance R from the center of the disk (which has radius R). When he's standing there, the disk has angular velocity omega initial. He then walks in to a distance of R/3 from the center. What is the final angular velocity of the disk?
Moment of inertia for a solid disk is (1/2)MR^2.