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Interesting Friction problem (please assist me)

  1. Nov 1, 2004 #1
    This is a problem needed for a project...i have no clue what to do...

    two rods are lying parallel, with a third lying
    perpindicular across them, like a football goal post. how does one relate
    coefficient of static and kinetic friction between them, if only distance is
    measurable. This basically just wants a ratio of the two friction coeffs. (this system forms an "H", to give you an idea of what it looks like.

    i think you have to push the top one somehow, or perhaps keep sliding one of the bottom ones until something happens on top. and then there has to be distance used to relate the two...i'm pretty sure its about balancing forces and torques...but again, not exactly sure. Please let me know any opinions!! Thanks!
     
  2. jcsd
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