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QUESTION
A dock worker uses a pulley system to raise a boat onto a dock. The pulley system has a mechanical efficiency of 73%. The boat has a weight of 950N. The pulley system lifts the boat 5m into the air.
A dock worker uses a pulley system to raise a boat onto a dock. The pulley system has a mechanical efficiency of 73%. The boat has a weight of 950N. The pulley system lifts the boat 5m into the air. How many Newton-meters of work does the dock worker have to exert to lift the boat?
