You need to arrange the data in two columns somehow. It looks to me like the friction force is 3/10 of the normal force. That would mean that the coefficient of friction (and the slope) is 0.3, The fit is a perfect straight line. I don't know what you mean by the "quality"
You will have to draw your own graph. Make the normal force the x axis.
Graph the following data and calculate the slope.
What quantity is the slope of this graph?
Normal Force(N)
Frictional Force(N)
0
0
2.0
0.6
6.0
1.8
9.0
2.7
10.0
3.0
1 answer