Friction Lab Flashcard

Front

What is friction?

Back

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

Front

What are the types of friction?

Back

The main types of friction are static friction, kinetic (sliding) friction, and rolling friction.

Front

How can friction be reduced?

Back

Friction can be reduced by decreasing the force between surfaces, smoothing surfaces, or using lubricants like oil or grease.

Front

What is the coefficient of friction?

Back

The coefficient of friction is a numerical value that represents the amount of friction between two surfaces in contact.

Front

What does a coefficient of friction of 0.2 indicate?

Back

A coefficient of friction of 0.2 indicates that the surfaces in contact have low friction, allowing for easier movement.

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 kinetic friction?

Back

Kinetic friction is the force that opposes the motion of an object that is already sliding over a surface.

Front

How do you calculate the frictional force?

Back

Frictional force can be calculated using the formula: F_friction = coefficient of friction × normal force.

Front

What is normal force?

Back

Normal force is the force exerted by a surface to support the weight of an object resting on it, acting perpendicular to the surface.

Front

What happens to friction when surfaces are rougher?

Back

When surfaces are rougher, the frictional force increases due to greater interlocking of surface irregularities.