Physics question?

A 55.7-kg child is standing on the outer edge of a merry-go-round that has moment of inertia 591 kg⋅m2 and radius 2.40 m. The entire system is initially rotating at 0.180 rev/s. Find the angular velocity if the child moves to a final position 1.10 m from the center of the merry-go-round.

Comments on "Physics question?"
More: Chemistry table.. I have no clue..? Plastic tool that is wide at the top and narrow at the bottom used to pour substances'? What is an example of a forshadow statement? Calculus 2 problem? Programming help matlab (vectors)?