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Energy Dissipation when compressing a spring

  1. Jul 4, 2010 #1
    I guess it is common to say spring system conserve energy.
    But recenetly i hav been wondering another thing.

    Everybody have the experience of compressing a spring.
    When you do so, you must pay a force to keep the spring compressed.
    However, when you exert that force, you must also generate power for your muscle.

    I understand with the same compression, the spring store the same amount of potential energy. So my question is, where does the energy produced by my muscle go?

    I think it is probably my misconception about something, but i would appreciate if anybody can fill me with some details 0.0...
  2. jcsd
  3. Jul 4, 2010 #2

    Doc Al

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    Staff: Mentor

    If you choose to keep the spring compressed using your muscles, then you'll have to spend energy to maintain the tension in your muscles. This has nothing much to do with the spring, though. (You could have just tied the spring with a cord to keep it compressed. Or just rested a weight on it. Those methods require no energy input.)

    Into random internal energy--'heat'.
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