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Problem calculating phi

  1. Sep 28, 2014 #1
    • Warning! Posting template must be used for homework questions.
    1. The figure shows the displacement y versus time t of the point on a string at x = 0, as a wave passes through that point. The scale of the x axis is set by ys = 18.0 mm.The wave has form y(x, t) = ym sin (kx - ωt+φ). What is φ?
    http://edugen.wileyplus.com/edugen/courses/crs7165/art/qb/qu/c16/pict_16_62.gif



    2. y(x, t) = ym sin (- ωt+φ)


    3. reading off my graph, it crosses the Y axis at 6mm, i used that as my Y(x,t) and 18 as my Ym, but i have no idea how to get the time or omega
     
  2. jcsd
  3. Sep 28, 2014 #2
    Your graph did not display.
     
  4. Sep 28, 2014 #3
  5. Sep 29, 2014 #4

    andrevdh

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    Homework Helper

    At t = 0 seconds the displacement is +6 mm and you have ym.
     
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