The resistance offered by friction depends directly on the force applied to move the two surfaces calculated as vertical or normal force and the roughness of the surfaces. The smoother the surfaces the less the resistance.

How To Explain That Friction Is Independent Of The Area Of Contact Quora

The maximum torque you can put on your wheel axle before the wheel slips.

Does surface area affect friction. Does surface area affect the force of friction. However coefficient of friction μ actually does depend on the temperature of the materials. The frictional force is proportional to the normal force acting on the surface which is oftentimes just the weight of an object on a surface with the coefficient of friction being the proportionality factor.

This means that even if you have two heavy objects of the same mass where one is half as long and twice as high as the other one they still experience the same frictional force when you drag them over the ground. The resulting frictional forces then are dependent only on the frictional coefficient of the materials and the FORCE. Tal results show that for the frequency of 4 and 6 Hz friction coefficient decreases at first and then increases with decreasing surface roughness which indicates that there exists the optimum region of surface roughness leading to the best friction reduction effect and it becomes larger when area fractions increase from 2 to 10.

Consider two cubic bodies made of same material. On Formula 1 cars this is increased further by also producing more downforce using inverted wings. Dec 5 2004 3.

This is because there is very little friction. High School Physics Help. First Prev 2 of 3 Go to page.

Devise an experiment that can test your hypothesis. Tags affect area force friction surface. This is because the more surface area facing the direction in which it is going the more air is pushing against it.

This is not a direct consequence of the fact that the bigger body has higher surface area. Friction is Not Dependent on Surface Area A fascinating property of friction is that it is not dependent on the surface area in contact between two objects. As long as you can treat the coefficient of friction μ as simply being a constant which depends only upon the two materials which are present then surface area will not make any difference.

Yes surface area affect friction. Start date Apr 24 2009. The rougher the surface the more the resistance.

Fore example take two identical pieces of. 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.

Depending on the type of roughness and the materials properties the real area of contact does not necessarily depend on the average surface roughness. Thats the simple model used in physics courses. So you can put more power to the ground.

Frictional force does not directly depend on surface area but it does depend on the normal reaction force. Many primary school teachers. The force due to friction is generally independent of the contact area between the two surfaces.

A larger surface area doesnt affect the free-rolling dynamic friction but it increases the maximum friction ie. Mar 2009 129. Hence for friction to increase the weight must also increase which is against the bounds of the question.

Examine the force of static friction for an. Although a larger area of contact between two surfaces would create a larger source of frictional forces it also reduces the pressure between the two surfaces for a given force holding them together. Since pressure equals force divided by the area of contact it works out that the increase in friction generating area is exactly offset by the reduction in pressure.

The bigger body will have more weight and higher friction will act on it. As for why it has no dependancy on surface area realise that as the surface area increases the force is more distributed and hence there is a lower pressure at the surface between the object and the ground. In addition to this for certain textures and materials making a surface smoother reduces friction.

If you think about a surface with low friction like an ice rink the puck moves around very easily and sometimes will even slide without being pushed. The coefficient of friction does not depend on the surface area. Graham Best explains to what extent friction depends on weight and surface area.

This experiment aims to prove that surface area may not be a factor which affects the frictional force acting between surfaces. How does the surface area of the block affect the force of friction or the coefficient of friction. Making a surface rougher or smoother may not always affect the sliding friction.