Question

Q21. a man whose mass is 50 kg climbs up 30 steps of a stair in 30 s. if each step is 20 cm high, calculate the power used in climbing stairs.(g=10m/s

Answer 1

I hope it will help you!!!!!

Answer 2

distance, s = 20×30
= 600cm
= 6m
W = mgh
= 50×10×6
= 3000J
P = W/ t
= 3000/30
= 100 W