# 5 Facts On Rolling Friction And Sliding Friction

Friction is regarded to be one of the forces which opposes the motion of two objects when in contact. Let us study in further several facts about friction and its type.

Rolling friction occurs when an object is allowed to roll over a surface of contact and sliding friction occurs when any two objects are allowed to rub against each other. Rolling friction appears when the surface of contact changes the shape due to application of an external force.

In this article we will be discussing, is sliding friction lesser than rolling friction, how does sliding friction work, rolling friction and sliding friction difference, relation between rolling friction and sliding friction and force of rolling friction and sliding friction.

## Is sliding friction lesser than rolling friction?

Resistance offered by the surface is called as friction. Let us see if sliding friction less than rolling friction.

Sliding friction is not lesser than rolling friction because when the microscopic surfaces of the two objects in motion cojoins, which is absent in rolling friction. Sliding friction is the friction majorly noticed in ball bearings. The interaction between the surface and the object is strong in sliding friction.

Sliding friction is the kind of friction in which the force is exerted on the object at motion, meaning, when the object is sliding on the surface of contact. In comparison to the sliding friction, static friction is stronger since the force exerted on the object at rest.

## How does sliding friction work?

Sliding friction is applied on two objects under motion relative to each other. Let us see how sliding friction works.

Sliding friction is created when on objects slides over the other. Sliding friction is also regarded to be kinetic force which keeps the two bodies in contact under constant motion. Sliding friction basically depends on two factors, namely, the material of the object and weight of the object.

In sliding friction, the intermolecular force of attraction takes place due to which sliding friction is often less than the static friction. Several facts that affect sliding friction are, object size, speed of both the objects under motion, surface of contact and the pressure applied on objects.

## Rolling friction and sliding friction difference

Friction types primarily depends on the type of motion they are under. Let us examine the difference between rolling and sliding friction.

## Relation between rolling friction and sliding friction

Friction is the resistance applied on the objects under motion. Let us see the relation between rolling and sliding friction.

The relation between the rolling friction and the sliding friction is coefficient of friction. The coefficient of friction μ is regarded to be the ration between the frictional force and normal force, coefficient of rolling and sliding friction is so the ration between their respective frictional forces to the normal force.

The coefficient of friction primarily depends on the Amonton-Coulomb Law. The law enforces that the frictional force and normal force are directly proportional to each other. Similarly, the rolling and sliding frictional forces are directly proportional to the normal force (applied load) respectively.