Solve Energy Needed to Raise 2000kg Lift to 10m

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SUMMARY

The discussion focuses on calculating the energy required to raise a 2000kg lift to a height of 10 meters using a 60% efficient engine. The potential energy (EP) is calculated using the formula EP = mgh, resulting in 196,000 Joules. Considering the engine's efficiency, the energy output (EOUT) is determined to be 117,600 Joules. The calculations confirm that the user is on the right track in solving the problem.

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Homework Statement



A engine used to raise a lift is 60% efficient, and the lift's mass is 2000kg. How much energy would be needed to raise it to 10m?

Homework Equations



Efficiency = energy output/ energy input *100

The Attempt at a Solution



EP=mgh = 2000*9.8*10= 196000 J.

Therefore, eff. = energy output/energy input *100 = (0.6=EOUT/196000

EOUT= 0.6*196000=117600 J

Am I on the right track?
 
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Hi kabton14, welcome to PF.
Here Eout = mgh.
 

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