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Homework Help: How to derive the law of conservation of mechanical energy

  1. Oct 29, 2008 #1
    1. The problem statement, all variables and given/known data

    Derive the Law of Conservation of Mechanical Energy starting from the Work-Energy Theorem. State any assumptions.

    2. Relevant equations

    I'm not really sure where to start with this. Basically how to end up with the equation 0=[tex]\Delta[/tex]U+[tex]\Delta[/tex]K

    3. The attempt at a solution
     
  2. jcsd
  3. Oct 30, 2008 #2
    Anyone? It's for a lab that's due tomorrow morning. Any little info on where I should start with this would be great! By the way, if it helps, the procedure for this lab was a cart that it is getting pulled forward by a hanging mass. There was a force sensor to measure the tension in the string and a position sensor.
     
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