Transcript
![Page 1: Friction Friction always opposes motion or the applied force (called a non-conservative force) Force due to the rubbing of two surfaces against each other](https://reader036.vdocuments.mx/reader036/viewer/2022070401/56649f165503460f94c2c587/html5/thumbnails/1.jpg)
Friction
• Friction always opposes motion or the applied force (called a non-conservative force)
• Force due to the rubbing of two surfaces against each other
• Typically…..
• 0< μ < 1
• 0 would be “frictionless” and μ=1 is really “sticky”
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![Page 3: Friction Friction always opposes motion or the applied force (called a non-conservative force) Force due to the rubbing of two surfaces against each other](https://reader036.vdocuments.mx/reader036/viewer/2022070401/56649f165503460f94c2c587/html5/thumbnails/3.jpg)
5.29 micrometer (μm) = 1/500 inch
A magnified view of a frictionless coating
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The road from static to kinetic friction
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Friction (types)
• Kinetic Friction: this is moving friction
• Static friction: this is non-moving friction
• Static friction > sliding friction
Both friction types are defined by the coefficient of friction, μ (either kinetic, μk or static, μs)
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Fiction Equations
k k N
s s N
f F
f F
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