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force was calculated at 1.91N. As expected the static force was higher than the kinetic force. This holds true throughout the entire experiment. As the weight and normal force increase, so do both friction forces. The graph below is the linear graph of our five experiments trials. It depicts how the increase in normal force correspondingly increased the friction forces. It also shows how the static friction force is continuously growing at a greater rate than the kinetic
Our results justifies the ideas behind the static threshold and theories behind the friction forces. In the graph present in the book, the initial rise A represents the initial pulling force rising before the object can move. B is the apex of the graph where static friction is at its max. Beyondthis point the object will move. C is where the static friction threshold is broken and the object beings to move with kinetic friction forces acting upon it. D is the object moving at a constant velocity. Friction forces are independent of the normal force, therefore the normal force on the bottom surface did not affect the coefficient. Only the mass affected the coefficients. The most prevalent pattern between static and kinetic friction is where static friction is always larger than kinect, and the static value is always recorded first before the kinect value can be recorded.