Question: An elevator is used to move hay from a trailer into the loft of a barn. The vertical lift distance is 2 0 feet and
An elevator is used to move hay from a trailer into the loft of a barn. The vertical lift distance is feet and each bales weighs lbs The rate at which the bales are placed into the loft is per minute. If the elevator has a mechanical efficiency of ratio of power useful in raising hay to power put into elevator what is the required power input to the elevator?
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