Question

a person of mass 50 kg reaches a height of 6 metre in 40 seconds. find the power used by the person ( g = 10 m / s 2)​

Answer 1

Answer:73.5 W

Explanation:

Given

mass of Person $m=50 kg$

time taken $t=40 s$

height acquired $h=6 m$

Gain in Potential Energy $=mgh$

$P.E.=50\times 9.8\times 6=2940 J$

$Power\ required=\frac{Energy}{time}=\frac{2940}{40}=73.5\ W$