Question

In which state of matter is the friction the greatest i.e. friction in which State of matter causes most resistance.Plz. explain.

Answer 1

The friction force depends on two factors:
a) The materials that are in contact. The two materials and the nature of their surfaces. Rougher surfaces have higher coefficient of frictions but to slide apart. This makes sense in terms of a model in which friction is described as arising from chemical bonds between the atoms of the two surfaces at their points of contact: very flat surfaces allow more atoms to come in contact
b) The force pushing the two surfaces together. Pushing the surfaces together causes the more of the asperities to come together and increases the surface area in contact with each other.
therefore we cant say that which state of matter have less friction
some solid like graphite have low friction that other liquid
but some solid have great friction that fluid,
one we can say that considering the majority objects ,the solid have greater friction than liquid and gases
gases have less friction (this is not applicable for all mater )