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The Force of Friction Equation is actually three equations is one. Learn why! Want Lecture Notes? http://www.flippingphysics.com/fricti...
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0:00 The basic Force of Friction Equation
0:20 One Kinetic Friction Equation
0:39 The Two Static Friction Equations
1:40 Example Free Body Diagram
2:16 The direction of the Force of Friction
3:20 Determining the magnitude of the Force of Static Friction
4:09 Understanding the “less than or equal” sign
6:08 If the “less than or equal” sign were not there

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Experimentally Graphing the Force of Friction
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