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Homework Help: What is the efficiency of the engine?

  1. 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?
     
  2. jcsd
  3. Feb 15, 2009 #2

    Delphi51

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    Homework Helper

    Re: Help

    Figure out the potential energy given to the load. Any additional work is lost.
     
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