A 1.80 m radius playground merry-go-round has a mass of 120.0 kg and is rotating freely (no friction) with an angular velocity of 0.290 rev/s. What is its angular velocity, in rev/s, after a 37.0 kg child gets on the merry-go-round by stepping onto its outer edge? The child is initially at rest. You may ignore the size of the child. i.e. The child may be treated as a point particle. The merry-go-round may be treated as a horizontal uniform solid disk.