A boy of mass 40 kg runs up a flight of 50 steps , each of 10 cm high, in 5= sec, Find the power developed by the boy.
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Answered by
4
Answer:
Given, mass of the boy, m=40kg ;
total height gained, h=50×10cm
=500cm=5m
time taken to climb, t=5s
Work done by the boy,
W=mgh=(40)(10)(5)=2000J
Power developed, P=
t
W
=
5
2000
=400W
Answered by
3
Explanation:
Power=Work/Time
W=MGH=50×10×(50×0.1). (height = height of one step×no of steps)
=2500
Power=2500/5
=500 watt
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