Static Friction Definition
In physics, static friction is a type of friction that is defined as the amount of force that keeps an object at rest. At the same time, friction is defined as the force that resists an object’s movement.
There are a few laws of static friction listed below that will determine if the friction is static or not!
The maximum force of static friction is not dependent on distance or the area covered by an object.
The relationship between static friction and normal force is comparatively equal to each other. For instance, if the normal force rises, the highest external force that can be ensured by an object without moving also rises.
Formula of Static Friction
To find the value of static friction, you can use the formula listed below:
Fs = µsN
Fs = Static Friction of an object
µs = Static Friction coefficient
N = Normal Force
If you want to calculate static friction, you can use our Static Friction Calculator.
For a more precise understanding of static friction force, let us solve an example below:
Suppose if a normal force of 350 N is applied on an object, whereas 0.5 is the coefficient of friction, then find out the static friction of an object.
Normal force = 350 N
Coefficient of the friction = 0.5
Static friction of an object = ?
To find out the static friction of an object, we will use the formula listed below:
Fs = µsN
Putting values in the formula:
Fs = 350N x 0.5 = 175 N