A 60-kg woman runs up a flight of stairs having a rise of 4.5 m in a time of 4.3 s.What average power did she supply?

Question

Quizplus · Accepted Answer

The average power supplied is calculated using the formula: Power = Work/Time. The work done is equal to the gravitational potential energy gained, which is mgh (mass x gravity x height). Here, m = 60 kg, g = 9.8 m/s², h = 4.5 m. So, Work = 60 x 9.8 x 4.5 = 2646 J. The time is 4.3 s. Therefore, Power = 2646 J / 4.3 s = 615 W.

A 60-Kg Woman Runs Up a Flight of Stairs Having