Physics friction

What can we infer since the friction force versus the normal force has a linear slope

As the normal force increases the force of friction increases at a constant rate

The coefficient of static friction is always _______ than the coefficient of kinetic friction

Larger

What symbol is used for the coefficient of friction

M=mu

Does surface area have an effect on the coefficient

No

Does the coefficient of friction have units

No

Does changing the normal force change the coefficient of friction

No because it is linear and it changes the force of friction not the coefficient of friction--if the normal force increases than the force of friction will increase

What are the two types of friction

Static and kinetic

What does the amount of friction depend upon

Surface

What does the coefficient of friction have to be in terms of numbers

A positive value between zero and one

Friction

Forces that act against a push or pull

What is the Y intercept form of that function

Ff=M(Fn) Force of friction is equal to the coefficient of friction times the normal force

When would a surface have a higher mu

If there's more surface interaction like the felt

What creates friction

Irregularities in surfaces

When a force is applied to an object in the object doesn't move what is the value of the static friction exerted by the surface

It matches the applied force until the object starts moving

What other word is used for the slope in a fiction versus normal force graph

The coefficient of friction

Kinetic friction

The force that acts against the sliding motion of an object and it's constant

Static friction

The force that keeps an object from moving

When is the maximum amount of static friction applied

When the object moves

When does the frictional force by the table change from static to kinetic

When the object starts to move--constant