A 5.0x10^2 kg pumpkin is raised from the ground to a truck platform, a distance of 1.02m. It takes a group of volunteers 3.3s to lift the pumpkin onto the platform. Calculate the work and power required to lift the pumpkin

 

 

 

Expert Answers

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Here the by the work done by the volunteers the potential energy of pumpkin is increased.

Therefore;

Work done = Increase in potential energy of the pumpkin

                 `= 500*9.81*1.02`

                 `= 5003.1 J`

Power = Work/time

         `= 5003.1/3.3`

         `= 1516.1 J/s`

So the work done by the volunteers is 5003.1 J with a power of 1516.1 J/s

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