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A child with a mass of 50 kg is standing at the edge of a merry-go-round...

A child with a mass of 50 kg is standing at the edge of a merry-go-round which has a radius of 3.50 m and a mass of 700 kg. The merry-go-around is initially at rest. The child throws a 1.20 kg stone perpendicular to the merry-go-round's radius at a speed of 6.0 m/s. What is the resulting angular speed of the entire system? Friction is negligible and the merry-go-round is a uniform disk. The child is classified as a point mass.

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