A child of mass m comes running towards a (M) marry-go-round (initially at rest) with a velocity v, and jumps on the edge of it.
A) Suppose that there is no friction at the center, find the final angular velocity of the marry-go-round and the child?
B) After some time another boy standing on the side, throws a bag of mass m' to the child on the marry-go-round as he passes him. Find how will that change the angular velocity?
C) What will happen if the child on the marry-go-round drops the bag to the ground?