Force exerted will push or pull the object. The power used is 500 watt.
Power is the rate of change of energy with time. Power is represented as
P = W/ t
The work done or energy required to climb up the stairs is equal to
W=F x s
Force F of 500 N is applied to walk distance s of 4 m up a flight of stairs time t in 4 s, then
P = (500 x 4) / 4
P = 500 Watt
Thus, the power used is 500 watt.
Learn more about Power.
https://brainly.com/question/2289248
#SPJ2
