# How to find the Coefficient of friction from Fn and Ff Graph

1. Apr 9, 2017

### Harsh Patel

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. Apr 9, 2017

### kuruman

$F^{max}_s=\mu_s~F_N$ is of the form y = slope * x.

3. Apr 10, 2017

### CWatters

+1

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).