Question
5.(10 points) Suppose Michael Phelps, winner of 14 Olympic gold medals, uses mostly arm motion to...
5.(10 points) Suppose Michael Phelps, winner of 14 Olympic gold medals, uses mostly arm motion to pull himself along, exerting an average force of 240 N through a distance of 1.8 m in each stroke. (See figure below.) Assuming he does 120 strokes per minute. (a) calculate the work done in each stroke, and (b) calculate the useful power generated by his arm.
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F=240N, d=1,8m a) Weach = F.d=240x18 stroke = 432T Work (net) time (total) =X0x432 60 =864 watt And
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