Thursday
March 23, 2017

Post a New Question

Posted by on Saturday, November 21, 2009 at 9:16am.

A children's merry-go-round in a park consists of a uniform 200kg disk rotating about a vertical axis. the radius of the disk is 6 m and a 100kg man is standing on the outer edge when the disk is rotating at a speed of 0.20rev/s. how fast will the disk be rotating if the man walks 3m in toward the center along a radial line?

  • physics - , Saturday, November 21, 2009 at 10:35am

    MomentofINertia= 1/2 massdisk*r^2+massman*distanceheis

    So figure the moment of inertia at each point he stands.

    Conservation of angular momentum applies
    originalmomentum=finalmomentum
    Iorig*worig=Ifinal*wfinal

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question