Question

Describe briefly the main caus of firction​

Answer 1

Answer:

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Friction is a force that resists the relative motion between two objects or materials. The causes of this resistive force are molecular adhesion, surface roughness, and deformations. Adhesion is the molecular force resulting when two materials are brought into close contact with each other.

Answer 2

The causes of friction are molecular adhesion, surface roughness and the ploughing effect. Every object has a rough surface, though the surface may appear to be smooth to the naked eye. But when we observe through a microscope, we find that the surfaces of all the objects have rough edges.

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