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Find minimum value for coefficient of static friction

  1. Sep 24, 2015 #1
    1. The problem statement, all variables and given/known data
    upload_2015-9-24_20-28-15.png

    2. Relevant equations
    Newton's 2nd Law

    3. The attempt at a solution
    I was wondering if anyone could verify that I have all the correct vectors or if I am missing any. I just wanted to check before I started trying to derive the equations.
     
  2. jcsd
  3. Sep 24, 2015 #2

    TSny

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    Homework Helper
    Gold Member

    The directions of FT1 and FT2 do not appear to be correct in the first and third diagrams. Are the x-axes in those two diagrams parallel to the inclines?
     
  4. Sep 24, 2015 #3
    Yes
     
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