Question

Estimate the power you produce in running up a flight of stairs. Give your answer in horsepower (1 hp = 746 W). Suppose you climb one flight of stairs (3 m) in 10 seconds (you run up the stairs quickly). Estimate your mass to be 81 kg .

Answer 1

We find the work using the formula as written below:

W = mgh/t
where
m is mass
g is gravity equal to 9.81 m/s²
h is the height
t is time

W = (81 kg)(9.81 m/s²)(3 m)/10 s = 238.38 W

To convert:
238.38 W( 1 hp/746 W) = 0.32 hp