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Problem 4 Two disks with moment of inertia l about their geometrical centers rotate at clockwise angular speed wo and 2wo as shown. If the

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Problem 4 Two disks with moment of inertia l about their geometrical centers rotate at clockwise angular speed wo and 2wo as shown. If the top disk is lowered onto the lower disk such that friction brings them to a common angular speed, find the final kinetic energy. w

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