Given:
Mass of load, m = 10 kg
Distance, d = 20 m
Time, t = seconds
Work done is calculated using the formula:
Work = Force x Distance
To find the force applied by the boy, we can use the equation:
Force = Mass x Acceleration
Since the load is pushed at a constant velocity, the acceleration is 0. Therefore, force applied by the boy is given by:
Force = Mass x Acceleration = 10 kg x 0 = 0 N
Therefore, the work done by the boy is also 0, as no force was applied to move the load.
Energy used is also calculated using the same formula as work done, so energy used = 0 J.
Power is calculated using the formula:
Power = Work done / Time
Therefore, the boy's power output is:
Power = 0 / t = 0 W
Therefore, the boy did not perform any work, use any energy, or generate any power while pushing the load as no force was applied.
A boy pushes a load of mass 10kg to a distance of 20 metres in seconds.calculate the work done and energy used and then the boy's power
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