A boy of mass 10kg climbs up a steps of height 2m in 20s calculate the power of the boy
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.
To calculate the power of the boy, we need to use the formula:
Power = Work / Time
First, let's find the work done by the boy. The work done is equal to the force exerted multiplied by the distance moved in the direction of the force. In this case, the force exerted is equal to the weight of the boy, and the distance moved is equal to the height of the steps.
The weight of the boy can be calculated using the formula:
Weight = mass * acceleration due to gravity
Given that the mass of the boy is 10kg and the acceleration due to gravity is approximately 9.8 m/s^2, we can calculate the weight as follows:
Weight = 10kg * 9.8 m/s^2
Weight = 98 N
Now, let's calculate the work done by the boy:
Work = Force * Distance
Work = Weight * Height
Work = 98 N * 2m
Work = 196 J
Finally, we can calculate the power using the formula:
Power = Work / Time
Power = 196 J / 20s
Power = 9.8 W
Therefore, the power of the boy is 9.8 Watts.