Frictional force is
a) horizontal component of reaction force b) vertical component of reaction force
c) resultant of normal reaction and reaction force d) none of these
Frictional force has
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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 is a force that opposes the relative lateral motion of two solid surfaces in contact.
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