a boy whose weight is 600 N runs up a flight of stairs 10 m high in 12 second .What is his average power?
What's the answer
To find the average power, we need to use the formula:
Average Power = Work / Time
First, let's find the work done by the boy to climb the flight of stairs. The work is equal to the force applied multiplied by the distance moved:
Work = Force × Distance
Given that the weight of the boy is 600 N and the height of the stairs is 10 m, we can calculate the work:
Work = 600 N × 10 m = 6000 N·m = 6000 J (Joules)
Now, we have the work done and the time taken, which is 12 seconds. We can plug these values into the formula to find the average power:
Average Power = Work / Time
Average Power = 6000 J / 12 s = 500 J/s = 500 W (Watt)
Therefore, the average power exerted by the boy is 500 Watts.