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In order to determine the mass moment of inertia of a flywheel of radius 1.5 ft, a 20-lb block is attached to a wire that is wrapped around the flywheel. The block is released and is observed to fall 12 ft in 4.5s. To eliminate bearing friction from the computations, a second block of weight 40 lb is used and is observed to fall 12 ft in 2.8 s. Assuming that the moment of the couple due to friction remains constant, determine the mass moment of inertia of theflywheel.

1396_mass moment of inertia of wheel.jpg

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