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Homework Help: What do you see in this diagram?

  1. Apr 22, 2009 #1
    1. The problem statement, all variables and given/known data

    In this problem i'm asked to give the differential equation of the mechanical system in the following diagram:


    2. Relevant equations

    Once i understand the diagram, i'll get the motion equation by newton or lagrange. But what is G in the diagram?? I can't ask to the "creator of the draw". Is the black dot fixed? What do you think?? Thanks a lot...
    Last edited: Apr 22, 2009
  2. jcsd
  3. Apr 22, 2009 #2


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    Science Advisor
    Gold Member

    The "squggle" is a spring with spring constant K, the box is a mass. The open box G is a "dash pot" or dampener with dampening constant G (applies a force -G times the velocity) and of course the wall on the right is a wall i.e. fixed point.

    I'm not sure about the f(t), whether that is a force or a position x1=f(t). My guess is that it is indeed a force.
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