Physics Help Forum Angular Momentum
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 Jan 19th 2009, 07:22 AM #1 Junior Member   Join Date: Jan 2009 Posts: 21 Angular Momentum In playground there is a small merry-go-round of radius 1.25m and mass 175kg. Assume the merry -go-round to be a uniform disc. A child of mass 45kg runs at a speed of 3.0 m/s tangent to the rim of the merry-go-round (initially at rest) and jumps on. If we neglect friction, what is the angular speed of the merry-go-round after the child has jumped on and is standing at its outer rim? A) 0.82 rad/s B) 2.4 rad/s C) 0.49 rad/s D) 1.2 rad/s E) 0.41 rad/s

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