The frictional force being independent of the area of contact
The frictional force being proportional to the load
The frictional force being independent of the speed of movement
How It's Used
"A series of QuickTime movies establishes the three laws of friction: Leonardo da Vinci's (the frictional force being independent of the area of contact), Euler and Amonton's (the frictional force being proportional to the load), and Coulomb's (the frictional force being independent of the speed of movement).”
—Chris A Butlin, “The web: Friction and drag,” The Guardian (UK), April 26, 2005.
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