Jaybee85 Messages 1 Reaction score 0 Thread starter Feb 15, 2009 #1 if a engine must do 500 joules of work to pull a 10 kg load up to a height of 4 meters, what is the efficiency of the engine?
if a engine must do 500 joules of work to pull a 10 kg load up to a height of 4 meters, what is the efficiency of the engine?
Delphi51 Homework Helper Messages 3,406 Reaction score 11 Feb 15, 2009 #2 Figure out the potential energy given to the load. Any additional work is lost.