It is wrong to say that friction doesn't occur in smooth surface.. As ideally, no such surface exists, which has 0 value of friction. We can say that the magnitude of friction force is less in smooth surfaces as compared to that in rough surfaces.
Friction opposes the motion of a body. When we go to the molecular level, we can see that the surface of a plane is not smooth but rough.. We cannot see that roughness through naked eyes. But the amount of roughness differs from object to object. The so called smooth surfaces have less roughness as compared to un-smooth surfaces. Hence, the magnitude of friction is LESS in smooth surfaces...
Some friction will occur with seemingly smooth surfaces because at a molecular level, nothing is smooth.
Some friction will occur on smooth surfaces because even the smoothest of surfaces isn't completely smooth. There are bumps and cracks on the face of the surface when "zooming in" to a microscopic level.
Friction on smooth surfaces reduces the amount of sliding or slipping that can occur between the surfaces. This helps to create more resistance to movement and helps objects remain in place. However, the amount of friction on smooth surfaces is typically lower compared to rough surfaces.
Smooth vs. Rough surfaces. Rough surfaces have more surface area than smooth surfaces. This means that there are increased incidences of molecular reactions between the surface and object
Because friction is less on smooth surfaces. Smoother the surfaces, lesser the friction.
Yes, smooth surfaces can still produce friction. Friction is caused by the resistance between two surfaces when they are in contact with each other, not only by the texture of the surfaces. Smooth surfaces can still generate friction, although the amount of friction may be lower compared to rough surfaces.
Because on the molecular level, they are not smooth No surface is perfectly smooth and even if it were, many molecules of the two surfaces would get close enough together to interact.
Rough surfaces tend to have more friction compared to smooth surfaces. This is because rough surfaces have more microscopic irregularities that create greater resistance as objects move across them. Smooth surfaces have less friction due to the reduced contact and interaction between the surfaces.
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Yes, a smooth surface reduces friction because there are fewer microscopic irregularities that can create friction between surfaces. This results in less resistance when two objects slide or move against each other.
Surface friction is defined as the resistance of an object experiences during motion. So, for the same object, a smooth surface has less friction than a rough surface. Think about skating on ice or a piece of plywood!