Which of the following is called the essence of friction?
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Answer:
Adhesion is the essence of friction. You've seen a water drop adhere to a window pane. The force of friction prevents this liquid from sliding down the solid material. But most cases of friction you see concern a solid object sliding or moving against another solid.
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Explanation:
When two objects are brought into contact, many atoms or molecules from one object are in such close proximity to those in the other object that molecular or electromagnetic forces attract the molecules of the two materials together. This force is called adhesion. ... Adhesion is the essence of friction.
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