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Problem 10.9: What is the ratio of the kinetic energy?

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The animation depicts an idealized drive train for a bicycle. A large green disk (i.e., a flat cylinder) is used to rotate a small green disk of the same density and thickness via a massless chain that does not slip (position is given in meters and time is given in seconds). What is the ratio of the kinetic energy of the green disk to the kinetic energy of the red disk (KEgreen/ KEred)? Restart.

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