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of /home/abouaayt/public_html/aboutcivil/answers/qa-plugin/user-management/layer.php what is friction? - Civil Engineering Technical Questions Answers - Ask a Civil Engineer
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what is friction? explain with its types and mechanism?
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Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. There are several types of friction: Dry friction resists relative lateral motion of two solid surfaces in contact. Dry friction is subdivided into static friction between non-moving surfaces, and kinetic friction between moving surfaces. Fluid friction describes the friction between layers within a viscous fluid that are moving relative to each other.[1][2] Lubricated friction is a case of fluid friction where a fluid separates two solid surfaces. [3][4][5] Skin friction is a component of drag, the force resisting the motion of a solid body through a fluid. Internal friction is the force resisting motion between the elements making up a solid material while it undergoes deformation.
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