Waiting for answer This question has not been answered yet. You can hire a professional tutor to get the answer.
QUESTION
a dock worker uses a pulley system to raise a boat onto a dock. the pulley system has a mechanical...
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?
