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Homework Help: What coefficient of friction would be required to prevent the system from moving?

  1. Sep 22, 2012 #1
    1. The problem statement, all variables and given/known data
    So basically this is a two part question, first part was find acceleration of the system (which i already found) with a coefficient of friction of 0.1. B) asks you what coefficient you need for the object not to move?



    2. Relevant equations



    3. The attempt at a solution
    So I figured the acceleration has to be 0 for the object not to move, and I played around and stuff but nothing really got me the answer I needed. I understand that the force of friction must equal the force applied without friction.. I think :/
     
  2. jcsd
  3. Sep 22, 2012 #2
    We do not know the whole question.
     
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