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What is input work?

  1. Mar 22, 2009 #1
    okay so input force is the amount of force that is put in right?
    so you can find that by using the formula force = mass x accleration...
    but then what is input work?

    work is the result of force... but then wouldn't that be output work? i don't understand teh concept of input work.... what is it? how do you find it?
  2. jcsd
  3. Mar 22, 2009 #2


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    Umm, I'm unfamiliar with your terminology but I think what you're getting at is this:

    Input work would be the work done on a body or system, that is, forces that are applied to the body or system. This is in contrast to output work which is a force that is applied by the body or system to something else.
  4. Mar 23, 2009 #3
    There are two ways you can apply force to an object:
    1) Force times time dt is called an impulse and adds to the momentum of the object.

    2) Force times distance dx is called work and adds energy to the object.
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