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A uniform rod (slide down)

  1. Jul 14, 2008 #1
    Hi, somebody can helps me with this problem...

    A uniform rod of length L supported on a wall starts to slide down without
    friction. Show that the upper end of the rod loses contact with the wall when it is
    found two thirds of its original height.

  2. jcsd
  3. Jul 14, 2008 #2
    You have to find the andle which the rod makes withthe ground and prove its sine to be 2/3
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