Sliding friction pls
Answers
We can define sliding friction is the resistance created by any two objects when sliding against each other. This friction is also known as kinetic friction and is defined as the force that is needed to keep a surface sliding along another surface. It depends on two variables - one is material and the other is the weight of the object.
Any change in the surface area in contact does not change the sliding friction. In most of the materials, sliding friction is less than static friction. There are exceptions that include metals having static and sliding friction coefficients and are essentially the same with small surfaces where molecular attraction forces takeover.
Sliding friction Formula
The equation for sliding force includes the coefficient of sliding friction X the normal force.
FS = μSFn
Where,
FS = force of sliding friction
μS = Coefficient of sliding friction
Fn = normal force
Examples of Sliding Friction
- A block being slide across the floor.
- two cards in a deck sliding against each other
- A coaster sliding against the table.
Sliding can occur between two objects of arbitrary shape various the rolling friction is the frictional force that is associated with the rotational movement. The rolling friction is usually less than the one associated with sliding kinetic friction.
The values of the coefficient of rolling friction are quite less than that of sliding friction. It usually produces British sound and thermal bi-products . For example - movement of braking motor vehicle tires on a road way.
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