Why Does Friction Exist? Explaining 4 Forces

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Friction arises from the electromagnetic interactions between atoms on two surfaces in contact. When rough surfaces meet, their microscopic "mountains" and "valleys" create points of contact that lead to electron repulsion. This repulsion between the electrons of the surfaces contributes to the force of friction. The discussion highlights that both surface deformities and chemical bonds play a role in this interaction. Understanding these forces is essential to grasping the nature of friction.
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How does friction come about using the four forces?
 
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It comes from the electromagnetic interaction of the atoms of the two surfaces rubbing against each other.
 
I see, but is it because of deformities at the microscopic level or chemical bonds? Essentially what's I'm between. How does the electric force become friction.
 
Thinker301 said:
I see, but is it because of deformities at the microscopic level or chemical bonds? Essentially what's I'm between. How does the electric force become friction.
When you have a rough surface, it will have many "mountains" and "valleys". Your hand will also have these. When they rub against each other,the electrons of the atoms of your hand's mountains repell the electrons of your rough surface's mountains. This is the force.

Note: I don't mean actual mountains
 

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