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A playground merry-go-round with a radius of 1.80 m has a mass of 120 kg and is rotating with an angular speed of 0.270

A playground merry-go-round with a radius of 1.80 m has a mass of 120 kg and is rotating with an angular speed of 0.270 rev/s. What is its angular speed after a 33.0-kg child gets onto it by grabbing its outer edge? The child is initially at rest. I

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