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Homework Help: Friction Problem

  1. May 31, 2007 #1
    1. The problem statement, all variables and given/known data
    A 3.15 kg block is pushed along the ceiling with a constant applied force of F = 87.4 N that acts at an angle of alpha = 58.9° with the horizontal, as seen in the figure below.
    http://aycu26.webshots.com/image/18345/2003241655315981977_rs.jpg
    The block accelerates to the right at 5.49 m/s2. Determine the coefficient of kinetic friction between block and ceiling.



    2. Relevant equations
    Ff=uN


    3. The attempt at a solution

    Tried using the angle but dont know what to do.
    Any ideas?
     
  2. jcsd
  3. May 31, 2007 #2

    hage567

    User Avatar
    Homework Helper

    So what did you use for N? You need to show more of what you did. Have you drawn a diagram with all of the forces on it? Remember Newton's second law.
     
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