Friction Forces Flashcard

Front

Which type of friction must be overcome to start moving an object?

Back

Static friction

Front

How does the roughness of surfaces affect kinetic friction?

Back

It increases friction.

Front

What is the coefficient of kinetic friction?

Back

A measure of the roughness between two surfaces

Front

What is the normal force?

Back

A force that acts perpendicular to the surface.

Front

How does the normal force affect friction?

Back

It increases friction.

Front

Why is it harder to move a bookcase on carpet than on a wood floor?

Back

Carpet has a higher coefficient of friction.

Front

What is the effect of intermolecular bonds on friction?

Back

They increase friction.

Front

How does kinetic friction generate heat?

Back

By breaking bonds and moving past bumps

Front

What is the role of static friction when an object is at rest?

Back

To resist motion

Front

What happens to static friction when an object starts moving?

Back

It decreases