A pulley system lifts a 500 lb bloch 2 feet with an effort
A pulley system lifts a 500 lb bloch 2 feet with an effort of 50 lbs. If the 50 lbs moves 30 feet, what is the efficiency of the pully system?
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a pulley system lifts a 500 lb bloch 2 feet with an effort of 50 lbs if the 50 lbs moves 30 feet what is the efficiency
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