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How the wave equation relates to Newton's Second Law of Motion

  1. Nov 27, 2007 #1
    1. The problem statement, all variables and given/known data
    Open Question 3.bmp

    2. Relevant equations


    3. The attempt at a solution

    Open Answer 3.bmp

    Any help with this would be greatly appreciated
     

    Attached Files:

  2. jcsd
  3. May 22, 2008 #2
    consider a small sting segment with (different) tension force vectors acting on each end, and write down newtons second law in two orthogonal directions
     
  4. Jul 19, 2008 #3
    I think the problem lies in the definition of F and acceleration a. In answer 3.bmp the F is defined as the tension in the rope, which is coaxial to the string, while the second derivative of y , the acceleration of an element with coordinate (x,y), is vertical to the string. Surely you can't say F=ma with F and a pointing to 2 different directions.
     
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