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Homework Help: Kinetic Friction with Blocks Need Help.

  1. Oct 24, 2011 #1
    1. The problem statement, all variables and given/known data
    Suppose the coefficient of kinetic friction between m1 and the plane in the figure is μk=0.20, and that m1=m2=2.2kg.
    a) As moves down, determine the magnitude of the acceleration of m1 and m2 given θ=28o.
    GIANCOLI.ch04.p63and64.jpg

    b) What smallest value of μk will keep this system from accelerating?
    2. Relevant equations
    F=ma


    3. The attempt at a solution
    I am not sure even where to begin.
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Oct 24, 2011 #2
    So what are the forces acting on both masses? Can you draw FBD's to help you get some equations to solve for a?
     
  4. Oct 24, 2011 #3
    The normal force, the force of the weight, and the force of tension are acting on both blocks.
     
  5. Oct 24, 2011 #4
    I am still really confused though.....
     
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