A boy has mass 45 kg runs up a staircase of 45 steps in 9 seconds if the height of each step is 15 cm find his find his power take Gravity 10 ms per square
Answers
Answered by
0
Answer:
Given
mass=45kg
g=10m/s^2
t=9second
height of one step=15/100cm=0.15m
total height=45×0.15=27/4m
power=work done/time=f×s/t=m×g×s/t. (f=m×g)
=45×10×27/4÷9
=25×27÷2
=675÷2=337.5w
Similar questions