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Relative Velocity of locus of curves

  1. Jan 1, 2016 #1
    Hi Folks,
    I am struggling to see how eqn 4.1.17 is arrived at using using eqn 4.1.10 at bottom of attachment. Its not clear to me what [tex]\frac{d \phi}{dt}[/tex] is...apart from what is given in eqn 2.1.30...
    Any ideas?
    Thanks Relative Velocity.png
  2. jcsd
  3. Jan 1, 2016 #2


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    Gold Member

    I have an idea ... post a pic that can be read
  4. Jan 1, 2016 #3
    Ok..I will try another picture again tomorrow.

    I think there should be enough resolution in the photo when you zoom in.
  5. Jan 2, 2016 #4

    This is the best I can do regarding a readable picture where I have pasted the relevant eqns.

    Relative Velocity r2.png
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