write a note on types of friction and compare their magnitude
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Friction is the force that opposes motion between any surfaces that are in contact. There are fourtypes of friction: static, sliding, rolling, and fluidfriction. Static, sliding, and rolling friction occur between solid surfaces. ... Fluid friction occurs in fluids, which are liquids or gases.The frictional force always acts between two surfaces, and opposes the relative motion of the two surfaces. ... The magnitude of the force of kinetic friction acting on an object is fk = μkN, where μk is the coefficient of kinetic friction.
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