A boy of mass 10kg climbs up a steps of height 2m in 20s calculate the power of the boy

Answer 1

To calculate the power of the boy, we need to use the equation:

power = work / time

First, let's calculate the work done by the boy. Work is defined as the force applied over a distance. In this case, the force applied by the boy is equal to his weight, which can be calculated using the formula:

weight = mass * acceleration due to gravity

weight = 10kg * 9.8m/s^2 = 98 N

The work done by the boy can be calculated using the formula:

work = force * distance

work = 98N * 2m = 196 Joules

Now, we can calculate the power using the equation:

power = work / time

power = 196J / 20s = 9.8 Watts

Therefore, the power of the boy is 9.8 Watts.