Friction Lab

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

The two main types of friction are static friction (preventing motion) and kinetic friction (opposing motion).

Front

What is the coefficient of friction?

Back

The coefficient of friction (μ) is a dimensionless value that represents the ratio of the force of friction between two bodies and the force pressing them together.

Front

How do you calculate the kinetic frictional force?

Back

The kinetic frictional force (F_k) can be calculated using the formula: F_k = μ * N, where N is the 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

If a box has a mass of 10 kg, what is the normal force acting on it on a flat surface?

Back

The normal force (N) is equal to the weight of the box: N = mg = 10 kg * 9.8 m/s² = 98 N.

Front

What happens to the frictional force if the normal force increases?

Back

If the normal force increases, the frictional force also increases, assuming the coefficient of friction remains constant.

Front

In a head-on collision, what does Newton's Third Law state about the forces experienced by the two colliding objects?

Back

Newton's Third Law states that for every action, there is an equal and opposite reaction; thus, the forces experienced by the two objects are equal and opposite.

Front

What is the formula for calculating the force of friction?

Back

The force of friction (F_f) can be calculated using the formula: F_f = μ * N.

Front

What is the difference between static and kinetic friction?

Back

Static friction prevents motion between two surfaces, while kinetic friction acts on surfaces that are already in motion.