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Homework Help: Curvature Proof

  1. Feb 18, 2013 #1
    1. The problem statement, all variables and given/known data
    This is part of the proof for curvature.

    Prove V X A = k(ds/dt)3B

    B is the the binormal vector. I have seen something in the proof with a T X N which I know is B.

    2. Relevant equations
    I have already proven

    a(t) = (d2s/dt2)T + K(ds/dt)2N

    3. The attempt at a solution
    I have seen some things where you start with v(t), and take the derivative then take a cross product, but I am not sure if this is how my professor wants us to do it. He wants us to use the a(t) part from above to prove it.
  2. jcsd
  3. Feb 18, 2013 #2


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    Science Advisor
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    Hi Baumer8993! :smile:

    Isn't V = (ds/dt)T ? :confused:
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