Question

Why do smooth surfaces offer less friction in comparison to rough surfaces ?

Answer 1

Answer:

Smooth surface have less friction because smooth surface have less resistance than rough surface. smooth surfaces have less irregularities that stop the moving object whereas rough surfaces have more irregularities.

Explanation:

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Answer 2

Smooth surface have less friction because smooth surface have less resistance than rough surface. smooth surfaces have less irregularities that stop the moving object whereas rough surfaces have more irregularities. 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