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Homework Help: He elastic potential energy

  1. Mar 15, 2006 #1
    1.60 kg object is hanging from the end of a vertical spring. The spring constant is 48.0 N/m. The object is pulled 0.200 m downward and released from rest. Complete the table below by calculating the translational kinetic energy, the gravitational potential energy, the elastic potential energy, and the total mechanical energy E for each of the vertical positions indicated. The vertical positions h indicate distances above the point of release, where h = 0.

    h (m)
    0.0
    0.200
    0.400


    ok..i got no problem with the translational kinetic energy, the gravitational potential energy and the total mechanical energy E......but im confused about the elastic potential energy..........i know its PE= 1/2KX^2
    but how can i find X
     
  2. jcsd
  3. Mar 15, 2006 #2

    Integral

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    Staff Emeritus
    Science Advisor
    Gold Member

    x would be the distance from the equiblrium position.
     
  4. Mar 16, 2006 #3
    X = the distance the mass stretches the spring from the springs original position (no mass pulling on it)
     
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