File:Friction_Animation_2_Blocks.gif · Wikimedia Commons · See Wikimedia Commons
friction
Sign in to saveAlso known as frictional force, friction force
thumb|360px|The blue plate has more friction on the sloped surface than the green one, so slides down slower.
Friction is a force that resists movement between two surfaces in contact with each other, causing objects to slow down or stop sliding. It matters because it affects how quickly things move—for example, a surface with more friction will cause an object to slide down more slowly than a surface with less friction.
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Research
32,143 papersvia PubMed
Wikidata facts
- Image
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- Commons category
- Friction
- Stack Exchange tag
- physics.stackexchange.com/tags/friction
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~38 min read
Article
32 sectionsContents
- Types
- History
- Dry friction
- Kinetic friction
- Role of the normal force
- Role of angle
- Coefficient of friction
- Approximate coefficients of friction
- Sources of friction
- Breakdown of the Coulomb model
- Dry friction and instabilities
- Friction at the nanoscale
- Fluid friction{{anchor|Fluid}}
- Lubricated friction
- Skin friction
- Internal friction
- Radiation friction
- Other types of friction
- Rolling resistance
- Braking friction
- Triboelectric effect
- Belt friction
- Friction reduction
- Devices
- Lubricants
- Applications
- Transportation
- Measurement
- Household usage
- See also
- References
- External links
thumb|360px|The blue plate has more friction on the sloped surface than the green one, so slides down slower.
300x150px|thumb|Simulated blocks with fractal rough surfaces, exhibiting static frictional interactions
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