Four Types of Friction – What Are The Four Types?
FOUR TYPES OF FRICTION – In this topic, we are going to know and identify the four types of friction and the meaning of each.
By definition, friction refers to the force between two surfaces that are sliding, or attempting to slide, across each other.
For example, when you climb a rock wall, this pits your strength and stamina against the force of gravity. Another example is when you try to push a book along the floor. That is friction.
Four Types
Here are the following types, according to Ck12:
- Static Friction
- This type acts on objects when they are resting on a surface. Examples include between the sole of your foot and the ground below. Without this type, we would slip out.
- Sliding Friction
- This refers to friction that acts on objects when they are sliding over a surface. It is weaker than static friction. For example, when you write, there is friction between the tip and the writing surface.
- Rolling Friction
- This friction acts on objects when they are rolling over a surface. The most common is between the wheels/round objects and ground. Again, without friction, it would be easy to slip.
- Fluid Friction
- This friction acts on objects that are moving through a fluid. Fluids are substances that can flow and take the shape of its container.
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