A boy of mass 50 kg runs up to a staircase of 45 steps in 9s. If the height of each step is 15cm, find his power
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2
hey there is answer !!!/
mass of the girl =50kg
time =50s
distance covered = 40*0.2m =8m
as she runs up , the energy is potential energy
mgh=50*10*8=4000 J
power =energy
time
=4000
50
=800
mass of the girl =50kg
time =50s
distance covered = 40*0.2m =8m
as she runs up , the energy is potential energy
mgh=50*10*8=4000 J
power =energy
time
=4000
50
=800
Answered by
6
Given, mass of body, m = 50 kg
h = 45 x15 = 675 cm = 6.75 m
t = 9 s, g = 10 m
PE = mgh = 50 x 10 x 6.75 = 3375 J
Power of the body = PE / time = Energy / time = 3375 / 9 = 375 W
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