why there is friction when two body have smooth surface and they are in contact??
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This is mainly because of the intermolecular force of attraction between the two smooth surfaces in contact. One example is your finger and aa whiteboard. It is hard to slide your finger when it is in contact with the surface of the white board due to the intermolecular force of attraction between the two. (In case of rough surfaces, friction occurs due to the interlocking of grooves)
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fFriction 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
friction is even there when there both are smooth surface because of the opposite motion which produces heat.They produce heat because the surfaces on small scales are rough like canyons rather than flat like the ocean. As these rough surfaces come into contact with each other they repel. When two atoms are brought very close together they store potential energy. When they move apart that energy becomes kinetic
friction is even there when there both are smooth surface because of the opposite motion which produces heat.They produce heat because the surfaces on small scales are rough like canyons rather than flat like the ocean. As these rough surfaces come into contact with each other they repel. When two atoms are brought very close together they store potential energy. When they move apart that energy becomes kinetic
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