Question

explain how friction is caused
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Answer 1

Friction is caused by rubbing two objects with each other.

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Answer 2

There Are Two Views To Describe The Cause Of Friction:-

Old View :-

According to this the cause of friction is the irregularity present on the surface of two bodies.

These irregularities interlocked and cause friction

Modern View :-

According to this only a few area between two bodies are in contact(See in figure)

Due to less area there is large pressure

And this pressure cause the formation of cold welds between the two bodies due to interatomic attraction.

These cold welds are cause of friction.

Note;- The Modern cause of friction is concept of class 11 th.

So don't take bother if you are in junior class