Friction

Front

What is friction?

Back

Friction is a force that opposes the motion of an object when it comes into contact with another object.

Front

What are the four types of friction?

Back

1. Static Friction: Prevents motion between stationary objects. 2. Sliding Friction: Occurs when two objects slide against each other. 3. Rolling Friction: Happens when an object rolls over a surface. 4. Fluid Friction: Resistance experienced by objects moving through a fluid.

Front

What is static friction?

Back

Static friction is the force that keeps an object at rest and prevents it from starting to move.

Front

What is sliding friction?

Back

Sliding friction is the force that opposes the motion of two surfaces sliding past each other.

Front

What is rolling friction?

Back

Rolling friction is the force that opposes the motion of a rolling object, such as a wheel or ball.

Front

What is fluid friction?

Back

Fluid friction is the resistance encountered by an object moving through a fluid (liquid or gas).

Front

What factors affect friction?

Back

1. The roughness of the surfaces in contact. 2. The amount of force pressing the surfaces together.

Front

How does surface roughness affect friction?

Back

Rougher surfaces create more friction because they have more microscopic hills and valleys that interlock.

Front

What is the relationship between weight and friction?

Back

In general, greater weight increases the frictional force because it increases the normal force between the surfaces.

Front

What happens to friction when surfaces are lubricated?

Back

Lubrication reduces friction by creating a barrier between the surfaces, allowing them to slide more easily.