MPhomework10b - decreasing to circle to radius r What is...

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Chapter 11 HW Problem (on paper, for Tuesday) A puck of mass m is attached to a cord that passes through a hold in a horizontal frictionless surface. The puck is originally moving in a circle of radius r i and speed v i . The cord is then slowly pulled from below,
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Unformatted text preview: decreasing to circle to radius r . What is the speed of the puck and the tension when we reach the final radius. How much work is done by the person pulling the string? R=0.1m, m=0.05kg, r i =0.3m, v i =1.5m/s....
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