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Homework Help: Waves on string

  1. May 6, 2010 #1


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    1. The problem statement, all variables and given/known data

    Two transverse waves are on the same piece of string. The first has non-zero displacement only for kx + wt between pi and 2pi when it is equal to Asin(kx+wt). The second has y=Asin(kx-wt) for kx-wt between -2pi and -pi and is zero otherwise. Calculate the energy of the waves when t=0.

    2. Relevant equations

    3. The attempt at a solution

    Ok so i've sketched the waves...they look like two wavefront (one above the axis, one below) approaching each other..

    I'm just not sure how to find the energy..
  2. jcsd
  3. May 6, 2010 #2


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