a boy of mass 45kg climbs up 20 steps in 20 seconds.if each step is 25cm high , calculate the power used in climbing?
Answers
Answered by
101
m= 45kg
Number of steps = 20
Each step = 25cm
Total height climbed = 20*25= 500cm = 5m
time= 20sec
According to the formula,
Power = mgh/time
= 45*9.8*5/20
= 2205/20
= 110.25 W
Number of steps = 20
Each step = 25cm
Total height climbed = 20*25= 500cm = 5m
time= 20sec
According to the formula,
Power = mgh/time
= 45*9.8*5/20
= 2205/20
= 110.25 W
Answered by
58
hey there
here is your answer
we know that ,
power = work / time
work = mgh
m = 45kg
g = 10m/s²
h = 25 * 20 = 500cm = 5m
work = 45 * 10 * 5 = 2250J
P = W / T
P = 2250 / 20 = 114.5W
if you take g = 9.8 or 10 both are correct
hope it helped you
please do mark as brainliest
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