a dock worker uses a pulley system to raise a boat onto a dock. the pulley system has a mechanical...

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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 950 N. the pulley system lifts the boat 5 m into the air. how many Newton-meters of work does the dock worker have to exert to lift the boat?

    • 10 years ago
    • 999999.99
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