Question

A boy of mass 60 kg runs up a staircase of 50 steps in 10s. If height of each steps is 12 cm,find the power

Answer 1

350 W

Step-by-step explanation:

50 steps × 0.12 m/step = 6 m

Power = work / time

P = mgh / t

P = (60 kg) (9.8 m/s²) (6 m) / 10 s

P = 352.8 W

Rounding to two significant figures, the power is 350 W.