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Homework Help: Calculation of friction

  1. Dec 28, 2016 #1
    1. The problem statement, all variables and given/known data
    this is the problem:

    https://drive.google.com/file/d/0B4ksjSfetGUOeUdXX0tKODRWVjg/view?usp=sharing [Broken]
    2. Relevant equations
    I have no idea how to calculate this problem. Can anyone help me? I would be very greatfull :)
    Last edited by a moderator: May 8, 2017
  2. jcsd
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