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OpenStudy (anonymous):
A 1.80 m radius playground merry-go-round (disk = 1/2 m r^2) has a mass of 120 kg and is rotating with an angular velocity of 0.500 rev/s. What is its angular velocity after a 25.0 kg child gets onto it by grabbing its outer edge? The child is initially at rest.
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OpenStudy (anonymous):
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