Does the coefficient of friction change with mass?

Also, the coefficient of friction doesn’t depend on the mass of the object.

Does the coefficient of friction depend on the weight of the object?

No, it doesn’t. Weight (sometimes) indirectly affects the frictional force but not the coefficient. The frictional force is proportional the normal reaction force which often (but not always) is equal to the weight. The coefficient is determined by factors like the two surfaces in contact.

Why is it easier to push the chair on a smoother surface?

Answer. Smooth surface doesn’t have friction which inhibition motion and resist motion. Pushing chair in smooth surface makes the chair easily slide on it since there is no friction acting on the chair. Smooth surface only needs little force since there is no friction.

Which will cause more friction a rough surface or a smooth surface Why?

Friction is always more on a rough surface compared to a smooth surface. This is because rough surface offers more resistance to the movement of an object over it compared to a smooth surface.

How do you make a rough surface smooth?

Re: making a smooth surface rough I suggest revolving a stellated profile 180 degrees, copy rotate 90 degrees and add or intersect to give a sort of knurl texture.

How can you reduce the friction exerted by a surface?

There are several ways to reduce friction:

The use of bearing surfaces that are themselves sacrificial, such as low shear materials, of which lead/copper journal bearings are an example.
Replace sliding friction with rolling element friction, such as with the use of rolling element bearings.

What is the difference between smooth surface and rough surface?

As we know that the friction is the force which is opposing in nature, so in a smooth surface there would be no opposing or frictional resistance so , the object can move without any trouble (smoothly) whereas a rough surface is a surface in which there would be a major amount of frictional force present, also it has …