Magnus has reached the finals of a strength competition. In the first round, he

Question

Magnus has reached the finals of a strength competition. In the first round, he has to pull a city bus as far as he can. One end of a rope is attached to the bus, while the other is tied around Magnus's 48 inch waist. If a force gauge placed halfway down the rope reads out a constant 462.0 lbs while Magnus pulls the bus a distance of 98.0 inches, how much work does the tension force do on Magnus? The rope is perfectly horizontal during the pull. Express your answer in both foot-pounds (ft-lb) and Newton-meters (N

Explanation / Answer

T= 462 lbs = 2037.42 N

d= 98 inches = 2.489 m

tension froce acts opposite to the motion

W= -2.498 *2073.42 =5161.15 J = 3773 ft lbs

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