4 types of friction
by travis gore
1 static friction
static friction is the friction that exists between a stationary object and the surface on which it's resting. A frictional force occurs when you try to push an object alongside a surface. Once the objects have already started moving, kinetic friction takes over.
2 slidding friction
refers to the resistance created by two objects sliding against each other.
ex- Rubbing both hands together to create heat.
A sled sliding across snow or ice.
Skis sliding against smow.
A person sliding down a slide is an example of sliding friction.
A coaster sliding against a table.
A washing machine pushed along a floor.
3 fluid friction
Fluid friction is the friction between a solid object as it moves through a liquid or a gas. The drag of air on an airplane or of water on a swimmer are two examples of fluid friction.
4 rolling friction
is the force resisting the motion when a body (such as a ball, tire, or wheel) rolls on a surface. ex car on road