What causes friction to act
Answers
Explanation:
Friction is the resistance to motion of one object moving relative to another. It is not a fundamental force, like gravity or electromagnetism. Instead, scientists believe it is the result of the electromagnetic attraction between charged particles in two touching surfaces.
Scientists began piecing together the laws governing friction in the 1400s, but because the interactions are so complex, characterizing the force of friction in different situations typically requires experiments and can't be derived from equations or laws alone.
For every general rule about friction, there are just as many exceptions. For instance, while two rough surfaces (such as sandpaper) rubbing against each other sometimes have more friction, very smoothly polished materials (such as plates of glass) that have been carefully cleaned of all surface particles may actually stick to each other very strongly.
Friction is the opposing force that acts when the surfaces are in contact at rest or in motion. There are three basic reasons for the friction -: surface roughness , plowing effect (deformations of the object), molecular adhesion (forces that act when molecules are in close contact).
More to know :-
There are very small grooves and ridges on almost all surfaces. These groves and ridges are rarely seen and when an object goes through this surface, the groves and ridges try to stop and act in the opposite side of the motion in which the object is. The force applied by the groves and ridges is called friction. Friction tends to stop a object from moving and always acts in the direction opposite to the motion in which the object is. Some liquids like oil , water , etc. have very less groves and ridges thus friction is less in them so you easily slip while walking on them or when an object passes through them. But roads and tiles have friction which allows you to freely walk on them .
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