yeah it can be negative but this is not the most common phenomena , friction is reduced by smoothening the surface of the body if two extremely somoothened bodies are slided over each other then you would expect that they should have been moving very smoothly but the actual thing happeining is entirely different , even though the bodies are smooth enough to avoid friction as both the are of same composition adhesive forces (force of attraction between similar molecules) dominates and thus act as frictional force resisting the motion between them
The coefficient of friction, represented by the Greek letter mu, is a constant dependent on the observed interaction between any two given materials. For example, the coefficient of friction for a rubber wheel on a wooden floor will always be the same. The coefficient of friction is important in determining the force of friction, which is given by the equation Force of friction = (coefficient of friction)(normal force).
Yes
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.
Friction= (coefficient of friction)(normal reaction) If you don't have the friction or the coefficient of it I'm sure you must have been given something else. Could you add the exact question to the discussion ?
POMBO