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Potential energy change

  1. Oct 3, 2013 #1
    is it true that potential energy of a particle always decreases in the direction of conservative force acting on it.
     
  2. jcsd
  3. Oct 3, 2013 #2

    tiny-tim

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    hi pratikaman! :smile:
    potential energy is defined as minus the work done by a conservative force

    so yes, if your displacement is in the direction of the force, the work done is positive, and so the potential energy difference is negative :wink:
     
  4. Oct 3, 2013 #3
    ok take a inverse square force like A/r^2 always pointing towards origin. where 'A' is some constant and 'r' is distance from origin of force. then potential energy function for this is U= A/r + c . where c is arbitrary constant. then potential in this case increases in direction of force.
     
  5. Oct 3, 2013 #4

    tiny-tim

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    no, U= -A/r + c :wink:
     
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