Stretched compressed in other words the question c.
Rubber plastic coefficient of friction.
Plastic co efficient of friction co efficient of friction of engineering thermoplastics.
For rubber on tarmac close to 1 0.
At what ambient pressure.
For glass on glass 0 4.
F f μ n 1.
For polished oiled metal surfaces less than 0 1.
Showing the concept of coefficient of friction.
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Dry steel dry steel 0 70 0 57 0 80 greasy steel dry steel 0 23 0 16 0 90 greasy steel greasy steel 0 23 0 16 0 90 dry aluminiumdry steel 0 70 0 50 0 85 dry aluminiumgreasy steel 0 23 0 16.
Static friction is friction between two or more solid objects that are not moving relative to each other.
Is the rubber subject to other forces.
For example static friction can prevent an object from sliding down a sloped surface.
The static and kinetic friction coefficient values reference table shown in this article will be helpful for finding the cof values of commonly used materials.
Friction coefficient table for various material pairs in atmosphere and vacuum see the definition of friction coefficient is shown below the data was collected from various sources 1 2 3.
N normal force between the surfaces n lb there are at least two types of friction forces.
Is this in atmosphere water vacuum some other environment.
Friction coefficient table of solid lubricants metals plastics and anti friction materials.
What kind of plastic.
The coefficient of friction between two materials in relative sliding may depend on contact pressure surface roughness of the relative harder contact surface temperature sliding velocity and the type of lubricant whether the level of contamination.
The maximum force of static friction can be calculated by multiplying the normal force by the coefficient of friction specific to the pair of materials in contact.
Dynamic coefficient of friction and restitution.
Static and kinetic coefficient of friction.
The coefficient of friction is the ratio of a force to a force and hence has no units.
The friction force is the force exerted by a surface when an object moves across it or makes an effort to move across it.
What kind of rubber.
μ static μ s or kinetic μ k frictional coefficient.
The dynamic coefficient of friction are.
F f frictional force n lb.
The frictional force can be expressed as.
Typical values for the coefficient of friction when sliding is occurring i e.
The coefficient of static friction typically denoted as μ s is usually higher than the coefficient of kinetic friction.