Question

Power required by a boy of mass 30 kg to run up a staircase of 40 steps in 10 seconds is

Answer 1

Answer:

power= (work done)/time

work done= mass  * acceleration due to gravity = 30*10=300

total work done in climbing 40 steps=300*40=12000

power= 12000/10=1200 j/sec

Explanation: