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Which two surfaces would have the highest coefficient of friction?
Wiki User
∙ 14y ago
rubber on dry concreat
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoI'm sure someone can expand on this since I'm none too hot on surface chemistry but Teflon is a favorite for low friction coefficients (hence we use it on non-stick pans and etc, it is VERY slippery). Some metals like cobalt can have a low friction coefficient but arguably more difficult to prepare.
Graphite is another favourite and is used in many industrial processes that require low friction...although it is a lubricant so not entirely the same thing.
Erm....maybe superfluid helium which overcomes friction...not sure if that qualifies. Need a dedicated physicist.
BAM is typically given as the 'slipperiest' surface available at 0.02 friction coefficient.
Go with BAM and Teflon if you need definitive examples and do a Google search on each for more info.
Wiki User
∙ 14y agotoothpaste But seriously: Two rough surfaces have a lot of friction.
Wiki User
∙ 13y agoSandpaper and asphalt both have relatively high coefficients of friction.
Wiki User
∙ 13y ago-- sandpaper
-- dry concrete
-- short-pile carpet
-- sliced whole-wheat bread
Wiki User
∙ 11y agoRough surfaces would have the highest coefficient of friction.
Wiki User
∙ 14y agoice on ice
Wiki User
∙ 11y agovelcro :)
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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.
How much friction thick carpet produces?
It doesn't work that way - friction is not something that is "produced". The way it works is that you have a coefficient of friction for two surfaces that are in contact. Then you use that coefficient of friction, and multiply it by the normal force, to calculate the actual FORCE of friction.For the coefficient of friction, you need to specify a PAIR of substances; for example, carpet against glass would probably have less friction than carpet against rubber.
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 are two factors affect the force of friction?
The 2 factors on which friction two body is depended uponThe mass of the body,the coefficient of Static or limiting or dynamic friction( as the case may be)Gravity too.
Does friction depend on the types of surfaces involved and how hard the surfaces push together?
Friction does depend on the types of surfaces involved and how hard the surfaces push together. Friction would be very minimal if the surfaces were smooth and not pushing together too hard.
What 2 factors determine the strength of the friction between 2 surfaces?
On a flat surface it would be the friction coefficient and the weigh of body.
Is the coefficient of dynamic friction greater than the coefficient of static friction and why?
Millions of classroom experiments would indicate that there is, in fact, a difference, but it is most likely caused by dirt, oil, and imperfections on the surfaces. When care is taken to ensure the surfaces are uniform and clean, the difference between static and dynamic friction disappears.
An example of two surfaces that have a low coefficient of friction?
human joints are an excellent example. they have a static friction coefficient of .01 μs and a kinectic friction coefficient of .003 μkanother 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 μsHope this helped!
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.
How much friction thick carpet produces?
It doesn't work that way - friction is not something that is "produced". The way it works is that you have a coefficient of friction for two surfaces that are in contact. Then you use that coefficient of friction, and multiply it by the normal force, to calculate the actual FORCE of friction.For the coefficient of friction, you need to specify a PAIR of substances; for example, carpet against glass would probably have less friction than carpet against rubber.
Is coefficient of friction or coefficient of limiting friction are same?
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.
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 are two factors affect the force of friction?
The 2 factors on which friction two body is depended uponThe mass of the body,the coefficient of Static or limiting or dynamic friction( as the case may be)Gravity too.
Does friction depend on the types of surfaces involved and how hard the surfaces push together?
Friction does depend on the types of surfaces involved and how hard the surfaces push together. Friction would be very minimal if the surfaces were smooth and not pushing together too hard.
What would happen if the coefficient of friction between the tire and the pavement increased greatly?
Nothing. That's exactly what you want. When your coefficient of friction decreases too far, you need new tires.
What does COF in mechanic terms?
Most likely it would mean "coefficient of friction."
Some road surfaces are more slippery than others when wet true or false?
yes cement road surfaces are more slippery when wet then asfault yes the worst would be if it is covered by a film of liquid sufficient enough to reduce the coefficient ecstatic friction between the tyre and the road to essentially zero, but not so deep as to introduce a new source of friction
