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An example of two surfaces that have a low coefficient of friction?
Wiki User
∙ 13y ago
human joints are an excellent example. they have a static friction coefficient of .01 μs and a kinectic friction coefficient of .003 μk
another good example would be waxed wood on dry snow (as in a snowboard on a ski slope) this has a static friction coefficient of .04 μs
Hope this helped!
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoIce and glass both have low coefficients of friction. The smoother the object's surface, the lower the coefficient of friction of the object.
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Describe 3 examples where low friction is not useful?
Friction is very useful but it has its own disadvantages. Friction causes wear and tear. Friction spoils the soles of our shoes. friction reduces speed This is all wrong some not useful types of friction are are when airplanes fly the friction causes heat that materials that will withstand which are costly.
How does lubricating machinery-such as the chain on your bike reduce friction?
The surface tension between the metal on your chain pieces is high. The surface tension is low on lubricants like oil or graphite so putting them between moving surfaces provides a opposing surface for both materials that has a low friction.
The efficiency of the wedge is low because of?
friction or The mechanical advantage is greater for thinner wedges. However, the efficiency is low because of the large amount of friction.
How does friction with the atmosphere affect the speed of an artificial satellite?
Satellites in a low orbit, however, are slowed by friction with Earth's atmosphere.
What force would help you slide down a slide?
Gravity? the strength of the floor?
Give an example of two surfaces that would have a low coefficient of friction?
Friction is the static electricity of two things that are rubbed against each other. Ice would have a low coefficient of friction, as things could easily slide across it. This would also make sense for something like marble, which is very smooth.
Does light have friction?
All physical substances so far known have a coefficient of friction. In the cases of some substances (wet ice or teflon, for example) this may be quite low, but there are no truly frictionless surfaces.
What is physical difference between surfaces with high and low coefficients of friction?
A high coefficient of friction may be caused by a rough surface. It may also be the result of surfaces sticking together, as in the case of rubber which tends to stick to certain surfaces, at least when it is dry. Lubrication - such as a thin layer of oil - tends to reduce the coefficient of friction.
What are two examples of two surfaces that have a low coefficient of friction?
Ice and glass both have very low coefficients of friction because they are very smooth, so it is easier for a substance to glide over them.
Why the coefficient of friction cannot be zero?
The coefficient of friction is an empirical measurement and has to be measured experimentally, and cannot be found through calculations. Rougher surfaces tend to have higher effective values. Most dry materials in combination have friction coefficient values between 0.3 and 0.6. Values outside this range are rarer, but Teflon, for example, can have a coefficient as low as 0.04. Therefore, a value of zero would mean no friction at all, an ELUSIVE property even magnetic levitation vehicles have drag.
What type of force does low coefficient belong to?
Friction has a low coefficient, usually less than 1.
What man made substance has the lowest common coefficient to friction?
Diamond-like Carbon has a coefficient of friction of as low as 0.05 on polished steel.
What is Teflons coefficient of friction?
Very low - around 0.04
Is salt slippey?
Yes, the coefficient of friction is very low.
Which two surfaces would have the highest coefficient of friction?
rubber on dry concreat
What reduces friction between two pieces of metal?
Something with a low coefficient of friction such as PVC or PTFE polymers
What are the factors which affect the coefficient of static friction?
Dry surfacesFor low surface pressures the friction is directly proportional to the pressure between the surfaces. As the pressure rises the friction factor rises slightly. At very high pressure the friction factor then quickly increases to seizingFor low surface pressures the coefficient of friction is independent of surface area.At low velocities the friction is independent of the relative surface velocity. At higher velocities the coefficent of friction decreases.Well lubricated surfacesThe friction resistance is almost independent of the specific pressure between the surfaces.At low pressures the friction varies directly as the relative surface speedAt high pressures the friction is high at low velocities falling as the velocity increases to a minimum at about 0,6m/s. The friction then rises in proportion the velocity 2.The friction is not so dependent of the surface materialsThe friction is related to the temperature which affects the viscosity of the lubricant
