Question

A 60.0 kg woman runs up a staircase 15 m high (vertically) in 20. s. (a) How much power does she expend

Answer 1

Given that,

Mass of a woman, m = 60 kg

She runs up a staircase 15 m high in 20 s.

To find,

Power expanded.

Solution,

Power = rate of doing work

`P=(W)/(t)\\\\P=(mgh)/(t)\\\\P=(60* 9.8* 15)/(20)\\\\=441\ W`

So, the required power is 441 W.