By lubricating and polishing surface friction on that surface is ?
Answers
Answer:
Lubricants have oily texture which helps in reducing friction.
Explanation:
The friction is due to the roughness of surface. If we make the surfaces smooth by polishing ,then friction will be reduced. For example a slide in the park is polished to make its surface smooth and reduce friction.
Hope it helps you from my side
Answer: If the surfaces that are in contact are rough, there is more friction. Hence to reduce friction, the surfaces in contact are kept smooth and polished. It is worth noting that if the two surfaces in contact are of the same metal, the friction increases on polishing the two surfaces. This is why the bearings and the axle are made of different metals.
When we slide two extremely flat and highly polished metal surfaces together, molecular attraction adds to the coefficient of friction. In other words, the coefficient decreases as you reduce roughness up to a certain point where it then increases due to the molecular effects.