Question

Hii!!

A boy of mass 50kg runs up a staircase of 45 steps in 9 seconds. If the height of each step is 15cm, find his power.

Take g = 10m s^-2

No spamming..

Answer 1

Hey!!
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Here is your answer!!!
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TOTAL height = 45×15= 675cm=6.75m
W =m*g*h
=50*10*6.75
=3375N
P=w/t
=3375/9
=375W
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I hope it will help you!!!

Answer 2

heya here's your answer

the mass of boy = 50kg

total steps = 45

height of each step = 15cm

total time taken =9 sec.

so total distance = 45*15 = 675=6.75m

so power = mgh/t

=> 50*10*675/9*100

= 337500/900

= 375 w
hope this helps you