It can never be exactly zero, but it is close to 0.
quality of the Surface is affected to the Coefficient of friction
You need two different materials to determine the coefficient of friction. Without another material you cannot know what the coefficient of friction is.
With what material? Coefficient of friction is for two materials.
The coefficient of friction is the same in this case.
The force of friction does, but the coefficient of friction does not.
Diamond-like Carbon has a coefficient of friction of as low as 0.05 on polished steel.
Yes but make sure you are clear in your understanding between the coefficient of friction and the force of friction. The force of friction is the force that resists the motion of two surfaces moving against one another. The amount of friction is determined by the product of the coefficient of friction and the normal (perpendicular) force that is pressing the two surfaces together. The coefficient of friction is a unit-less constant, that indicates how two surfaces compare to two other surfaces that are being pressed together the same amount. If the normal force is the same on two pairs of surfaces the pair of surfaces with the lowest coefficient of friction will experience the lower force of friction.
quality of the Surface is affected to the Coefficient of friction
No. Coefficient of friction is not measured in units.
The strength of the force of friction depends on the types of surfaces involved and on how hard the surfaces push together.
Limiting friction is just the maximum static friction force (if you go over that point static friction becomes kinetic friction).Let f = frictional force,c = coefficient of frictionN = Normal forcefmax = cN = limiting frictionAlthough the term coefficient of limiting friction is not really used, I'd assume it would just be "c" (it's a coefficient after all). So they would be the same.If you meant is coefficient of friction the same as limiting friction, than the answer is no. Coefficient of friction is just the "c" in the equation. Limiting friction however is the product of the coefficient and the normal force.
You need two different materials to determine the coefficient of friction. Without another material you cannot know what the coefficient of friction is.
The coefficient of friction is dimensionless; it has no units.
With what material? Coefficient of friction is for two materials.
The coefficient of friction is a scalar quantity which has no direction which does not have an angle.
A higher coefficient of friction indicates that two surfaces in contact have a greater resistence. A lower coefficient of friction indicates that the two surfaces in contact have less resistence. Soccer cleats on grass have a greater coefficient of friction than skates on ice.
A higher coefficient of friction indicates that two surfaces in contact have a greater resistence. A lower coefficient of friction indicates that the two surfaces in contact have less resistence. Soccer cleats on grass have a greater coefficient of friction than skates on ice.