How much work is done by a person of mass 185 kg who climbs a ladder to the top of his house, a total of 15.0 m?

Question

Quizplus · Accepted Answer

Work done = force x distance moved in the direction of the force
In this case, the force is the weight of the person (mg) and the distance moved is the height climbed (h).
Therefore, work done = mgh
where m = 185 kg, g = 9.8 m/s^2 (acceleration due to gravity), and h = 15.0 m
Work done = (185 kg) x (9.8 m/s^2) x (15.0 m)
Work done = 27,180 J = 27.2 kJ (rounded to one decimal place)

How Much Work Is Done by a Person of Mass