Question: You are to design a rotating cylindrical axle to lift 800-N buckets of cement from the ground to a rooftop 7S.0 m above the ground.

You are to design a rotating cylindrical axle to lift 800-N buckets of cement from the ground to a rooftop 7S.0 m above the ground. The buckets will be attached to a hook on the free end of a cable that wraps around the rim of the axle; as the axle turns, the buckets will rise. (a) What should the diameter of the axle be in order to raise the buckets at a steady 2.00 cm/s when it is turning at 7.5 rpm? (b) If instead the axle must give the buckets an upward acceleration of 0.400 m/S2, what should the angular acceleration of the axle be?

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