A boy of mass 15kg runs up stair cases of 45 steps in 9 sec if the height each step is 15cm . Find his power.
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H=45×15.
power=mgh/t
power=15×9.8×45×15/9×100
110.25 watt
power=mgh/t
power=15×9.8×45×15/9×100
110.25 watt
Answered by
4
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
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
Similar questions
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