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A wheel rolls without slipping while pulled by a string wrapped around its circumference as shown in the animation (position is given in meters and time is in seconds). Which animation properly depicts the physical situation?
Start Animation a
Start Animation c
Start Animation b
Start Animation d
Sarah, with mass m and velocity v, runs toward a playground merry-go-round and jumps on at its edge. Sarah and the merry-go-round (mass M, radius R, and moment of inertia I = cMR2) then spin together with a constant angular velocity wf. If Sarah's initial velocity is tangent to the circular merry-go-round, what is wf?
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