Question

What is fluid friction and contact friction??

Answer 1

Fluid friction is the force that resists the movement of a solid object through a fluid (liquid or gas). Sky divers falling down through the sky experience a type of fluid friction called air resistance

contact machines is the study of the deformation of solid that touch each other at one or more points. This can be divided into compressive and adhesive forces in the direction perpendicular to the interface, and frictional forces in the tangential direction. Frictional contact mechanics is the study of the deformation of bodies in the presence of frictional effects, whereas frictionless contact mechanics assumes the absence of such effects.

Answer 2

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What is fluid friction and contact friction?

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Dry friction resists the relative lateral motion of two solid surfaces in contact. Fluid friction describes the friction between layers of a viscous fluid that are moving relative to each other. Skin friction is a component of drag, the force resisting the motion of a fluid across the surface of a body.

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