what is friction? what is fluid friction? what is rolling friction?
Answers
what is friction?
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 is a force that opposes the relative lateral motion of two solid surfaces in contact.
what is fluid friction?
Fluid friction is a force that restricts the movement either within itself or of another medium moving through the liquid. ... It describes the friction between the layers of the viscous liquid that moves relative to each other. The internal resistance to flow is termed as viscosity.
what is rolling friction?
Rolling resistance, sometimes called rolling friction or rolling drag, is the force resisting the motion when a body rolls on a surface. It is mainly caused by non-elastic effects; that is, not all the energy needed for deformation of the wheel, roadbed, etc., is recovered when the pressure is removed.