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Homework Help: How to find the Coefficient of friction from Fn and Ff Graph

  1. Apr 9, 2017 #1
    1. The problem statement, all variables and given/known data
    I have a Force Normal vs Force Friction Graph and I wan to find the coefficient of friction from the graph.

    2. Relevant equations

    3. The attempt at a solution
    I have tried the formula ff= uFN but my teacher is looking for me to do it using the graph
  2. jcsd
  3. Apr 9, 2017 #2


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    ##F^{max}_s=\mu_s~F_N## is of the form y = slope * x.
  4. Apr 10, 2017 #3


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    Look up the general equation for a straight line. Usually expressed as

    Y=mx + c

    m is the slope
    c is the vertical offset (point where the line intercepts the y axis).
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