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