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Energy diagram

  1. Feb 26, 2013 #1
    Look inside the paint doc.
    My question is why does the paragraph say ...A positive charge q gains kinetic energy as it falls towards the negative plate...

    However the graph shows that the positive charge q loses kinetic energy....

    I am confused what am I not understanding?

    Attached Files:

  2. jcsd
  3. Feb 27, 2013 #2


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    "Falling" appears to mean going toward x = 0, i.e. going left in the graph.
  4. Feb 27, 2013 #3


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    I think the U and K labels are the wrong way round in the diagram if time is increasing to the right. K should be increasing and U should be decreasing if a charge starts at rest on one of the plates and accelerates to the other - which is what the written passage says.
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