Coefficient of Friction
Coefficient of Friction is defined as the ratio of the frictional force and the resisting force between two surfaces. We use Greek letter mu(μ), to represent the coefficient of friction. Higher the coefficient of friction higher is the friction force between two surfaces.
- For rough surfaces μ (coefficient of friction) is very high
- For smooth surfaces μ (coefficient of friction) is very low
If the normal force acting on the body is N and the frictional force acting on the body is F then the coefficient of friction is calculated by the formula,
μ = F/N
As coefficient of friction is the ratio of two or more term it is a dimension less quantity, i.e. it has no units.
Friction
Friction in Physics is defined as a type of force that always opposes the motion of the object on which it is applied. Suppose we kick a football and it rolls for some distance and eventually it stops after rolling for some time. This is because of the friction force between the ball and the ground. Here, the force acting opposite to the motion of the ball that stops the ball is called the friction or friction force. Friction acts between two surfaces when one surface is in a state of motion.
In this article, we will learn about, Friction, Factors Affecting Friction, Causes of Friction, its advantages, disadvantages, and others in detail.
Table of Content
- What is Friction?
- Friction Formula
- Coefficient of Friction
- Causes of Friction
- Types of Friction
- Laws of Friction