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Wave going to a massless ring on a pole

  1. Sep 16, 2012 #1
    Hello,

    I was reading my textbook and watching MIT Opencourseware and noticed a discrepancy between the two.

    There was a string attached to a massless ring on a pole without friction, on the MIT website it said the ring will go twice the amplitude of the wave, but in the textbook it said it will go only as tall as the amplitude of the wave.

    Which is correct?

    Video: http://ocw.mit.edu/courses/physics/...and-waves-fall-2004/video-lectures/lecture-7/

    @roughly 69:30
     
  2. jcsd
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