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Homework Help: Mass hanging on a spring

  1. Mar 8, 2010 #1
    1. The problem statement, all variables and given/known data
    For my lab we measured potential energy with a mass on a spring. One of the questions is: When the spring is allowed to oscillate for some time, its amplitude becomes smaller until it eventually comes to a rest. What happens to the energy stored in the spring (What form of energy is it converted to)?

    2. Relevant equations

    3. The attempt at a solution
    I assume it is talking about the restoring force becoming greater than the force of gravity on the mass, but I don't know what form of energy it changes into.

  2. jcsd
  3. Mar 8, 2010 #2


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    Homework Helper

    In ideal cases, for conservation of mechanical energy PE+KE= constant.

    But in practical cases, what cannot be left out? (What makes a car slow down when the brake pedal is pressed down?)
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