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iknowsigularity
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Homework Statement
In a playground there is a small merry-go-round of radius 1.20 m and mass 220 kg. The radius of gyration is 91.0 cm. A child of mass 44.0 kg runs at a speed of 3.00 m/s tangent to the rim of the merry-go-round when it is at rest and then jumps on. Neglect friction between the bearings and the shaft of the merry-go-round and find the angular speed of the merry-go-round and child.
I have no idea how to go about starting this, so I'm not looking for an answer just perhaps what equation I should be using. thanks for any help!