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Does every surface have friction?
Friction is a force that opposes motion between any surfaces that are touching. Friction occurs because no surface is perfectly smooth. Rougher surfaces have more friction between them. Heavier objects also have more friction because they press together with greater force.
Does friction exist in a vacuum?
The results seemed to go against the laws of physics: The vacuum, by definition, is completely empty space and does not exert friction on objects within it. As a decaying atom moves through the vacuum, it really does experience some kind of force resembling friction.
What does no friction mean?
It opposes motion, meaning if something is sliding on the floor, friction is the force that makes it eventually come to a stop. In a world without friction, the object would continue to slide forever, if not acted on by another force.
Is friction a non contact force?
Friction is a type of contact force only. Applied Force: Force which is applied to an object by another object.
Is friction affected by surface area?
The force due to friction is generally independent of the contact area between the two surfaces. Note that this relationship breaks down when the surface area gets too small, since then the coefficient of friction increases because the object may begin to dig into the surface.
Why is there no friction in outer space?
As there is no air in space, there is no friction due to air in space. However, normal surface friction occurs whenever two surfaces rub together. So, even in space, when surfaces slide over each other there is friction. In space, it is the lack of air that prevents air friction from occurring.
Is it possible to have zero friction in physics?
No, exactly zero friction isn’t possible practically. But we can get very close to it by using having very flat and even surfaces, ball bearings, lubricants etc. Having zero friction means that there is no interaction between the two surfaces in contact, but there is no way we can avoid such interaction completely.
What is a friction-less surface?
There is no such thing as a friction less surface. All surfaces have friction. We can only minimize this force but we cannot totally eliminate it. For example sleigh ride on the snow has a very negligible friction. Once you move forward on the snow surface you can travel a far distance using a very little effort.
Can we reduce friction to zero by using lubricants?
No, we cannot reduce friction to zero as the surface contains many grooves. Even if we use a lot of lubricants, the friction will be reduced but can never be reduced to zero because every surface will still have minor irregularities in them. No, we cannot reduce friction to zero as the surface contains many grooves.
Is it possible to create a magnetic surface without friction?
It will all depend on your view of what a surface is. Whether it is a surface with friction or a man made surface, that is , a magnetic surface. If you create a magnetic levitation in a vacuum then the two bodies will have zero friction between them. So in a way we are cheating to get a friction less surface.