A merry-go-round rotates at the rate of 0.35 rev/s with an 86 kg man standing at
a point 2.5 m from the axis of rotation.
What is the new angular speed when the
man walks to a point 0 m from the center?
Consider the merry-go-round is a solid 50 kg
cylinder of radius of 2.5 m.
Answer in units of rad/s.

What is the change in kinetic energy due to
this movement?
Answer in units of J.