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...

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 info

jeew-m eNotes educator | Certified Educator

calendarEducator since 2012

write1,657 answers

starTop subjects are Math, Science, and Social Sciences

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

check Approved by eNotes Editorial

akshaygoel96 | Student

work = force to lift up and distance covered , it is a positive work done because direction and force are in the same direction
 W= Fd
 w = mgd(so you are lifting up , thats why F = mg
w = 5.0* 10^2 * 9.8 * 1.02 = + 4998kgm^2/s^2(donot forget to show positive sign)

 

power is  = (WORK DONE)/ TIME = 1514.5454 m^2 kg/s^3

SO SIMPLEY PLUG THE VALUE OF WORK ABOVE WE DONE , AND ALSO WE have given the time

Good luck , just check out for calculation , may be i did mistake in calculating work, further question . feel free to ask me..

Unlock This Answer Now