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Dynamics: Collision with inclined plane

  1. May 6, 2015 #1
    1. The problem statement, all variables and given/known data
    15-73.png
    I have two conceptual questions that I have written in read in my solution. The solution, and all the work, is correct. However there are two things that I am unsure as to why I am doing it. Thanks!

    2. Relevant equations

    Included in solution, although none should be needed as questions are conceptual.

    3. The attempt at a solution
    h.jpg The attachment is well under the limit, I don't know why the quality is be lowered so drastically...
     
    Last edited: May 6, 2015
  2. jcsd
  3. May 6, 2015 #2

    BvU

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    Can read the momentum question. With difficulty.
    Momentum isn't conserved because the plane exercises a force. Since it is smooth, it can only exercise a force perpendicular to its surface. Along the incline no force, so momentum conservation. Can't distinguish what your x, y, directions are. Make a better picture or type it out.
     
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