Question

why friction is less in smooth surface.. explain atleast in 150 word ... if u are able then answe only...​

Answer 1

Friction in smooth area is lesser than as compared to rough areas. The reason behind this is the interlocking between object's and surface is easil withdrawn. While the Frictional force between rough surface and object's surface is quite not easy to withdraw.

Both the surfaces of object's and ground's can be withdrawn using small force because the Frictional force which is resisting is less.

Answer 2

Answer:

I will answer it in 15o words mark it as brainlyest

Explanation:

Friction between rough surfaces occurs because, on the microscopic level, the surfaces have high and low area like hills and valleys. When they move horizontally past each other the hills of one surface interlock with the valleys of the other, similar to the way in which the teeth on gears interlock. It takes more force to push the hills past the valleys when both are bigger, as they are in rougher surfaces. A smooth surface has smaller hills and valleys.

There are also electrostatic attractions between surfaces, but these are weaker than the physical barriers to sliding.

Liquids such as water and oil reduce friction because they keep the two surfaces from contacting each other. The molecules in a liquid are free to move past each other so they don't present as much resistance to force.