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A 50.0-kg woman stands at the rim of a horizontal turntable having a moment of inertia...

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Physics

A 50.0-kg woman stands at the rim of a horizontal turntablehaving a moment of inertia of 420 kg · m2 and a radiusof 2.00 m. The turntable is initially at rest and is free to rotateabout a frictionless vertical axle through its center. The womanthen starts walking around the rim clockwise (as viewed from abovethe system) at a constant speed of 1.50 m/s relative to theEarth.

(a) In what direction does the turntable rotate?

counterclockwise clockwise    


With what angular speed does the turntable rotate?
rad/s

(b) How much work does the woman do to set herself and theturntable into motion?
J

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