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Homework Help: The distance between 2 spheres in pendulum

  1. Dec 13, 2012 #1
    Hi guys,first nice to meet you im new here.Im working on a physic homework and i.ve already done it but i dont know why the x=2lsinx ( x=distance between 2 spheres in pendulum).
    (P.S sorry for my bad english,im from Germany). Is that from a trig identity? I think i've understand it but if someone can tell mi with a pic it will be very helpful.
    Last edited: Dec 13, 2012
  2. jcsd
  3. Dec 13, 2012 #2
    just ad a pic of your problem and also your attemot at a solution and we can figure some solution out
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