Lab Flashcard 12 - Friction

Front

What is friction?

Back

Friction is a force that opposes the relative motion of two surfaces in contact.

Front

What are the two main types of friction?

Back

Static friction (preventing motion) and kinetic friction (during motion).

Front

What direction does friction act when an object is sliding up a ramp?

Back

Friction acts down the ramp, opposing the motion.

Front

What is the coefficient of friction?

Back

A dimensionless scalar value that represents the frictional force between two bodies.

Front

What is static friction?

Back

The frictional force that prevents two surfaces from sliding past each other.

Front

What is kinetic friction?

Back

The frictional force acting between moving surfaces.

Front

How is the normal force defined?

Back

The normal force is the perpendicular force exerted by a surface on an object in contact with it.

Front

What is the formula for calculating the frictional force?

Back

Frictional force (f) = coefficient of friction (μ) × normal force (N).

Front

What happens to the frictional force when the surface is rougher?

Back

The frictional force increases with a rougher surface due to higher resistance to motion.

Front

What is the relationship between mass and normal force on a horizontal surface?

Back

The normal force (N) is equal to the weight of the object (mg) on a horizontal surface.