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26-08-2022
Physics

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Find the work done by a person weighing 149 lb walking exactly one and a half revolution(s) up a circular, spiral staircase of radius 4 ft if the person rises 12 ft after one revolution.

Respuesta :

26-08-2022

Answer:

If the person rises 12 ft per revolution that person will

rise 18 ft in 1 and 1/2 revolutions

E = m g h = W h where W is the weight of the person

E = 149 lb * 18 ft = 2682 ft-lbs

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