Does the Surface Area Affect Friction

Surface area can be considered to affect friction if an increase in the surface area results in a corresponding increase of the frictional force. Therefore its value is constant for a given combination of material surfaces.

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However it also reduces the pressure between the two surfaces for a given force holding them together.

. Shape of the body. Beginning physics classes often teach a standard formula for the frictional force between solid surfaces. How does friction affect drag.

If this does not occur then surface area does not affect friction. 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 frictional force is constant.

Making a surface rougher or smoother may not always affect the sliding frictionBut elsewhere rougher surfaces can actually have. The force due to friction is generally independent of the contact area between the two surfaces. Look at your results decide and write your answer below.

Click to see full answer. No energy wasted on rotating the object then the force required to pull the objects would be the same ie. Assuming that all the objects have the same mass and that no energy is lost eg.

It will remain same if you vary the contact surface area. As you can see from the formula surface area plays no role in determining the force due to friction. Of course this is more a factor with sliding friction which tends to produce heat.

The force due to friction is generally independent of the contact area between the two surfaces. That formula says that the sliding frictional force depends only on the normal force between the surfaces how much they press on each other and on the. The friction coefficient is a property of the surface and doesnt change for any object.

Factors affecting the value of friction are. A smooth waxed surface will produce less drag than a roughened surfaceThis effect is called skin friction and is usually included in the drag coefficient. Fluid Friction and surface area is extensively discussed as below The fluid friction does not affect by surface area.

Does surface area affect the speed an object will slide down a ramp. Does surface area have an effect on friction. Friction is independent of the surface area.

The coefficient of friction for given pair of surfaces only. There is no dependancy on surface area. There are only two factors that affect the coefficient of friction and they are.

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. The greater the surface area the less the increase in temperature The thermal energy is dissipated over a wider area so that μ will tend to change less than in the case less surface area. We think that to get more friction more surface area must be in contact The second hypothesis each group should make concerns the effect of contact area on the friction measured.

The friction type Static kinetic or rolling friction The coefficient of friction is a surface property. If the surface area doubles then the frictional force doubles. Depending on the type of roughness and the materials properties the real area of contact does not necessarily depend on the average surface roughness.

It may sound counter-intuitive since increasing the contact area would create a larger source of frictional forces. Sometimes the frictional force is so great that it prevents. Students will probably suggest that The more surface area in contact the more friction we will measure.

Many factors exist but. Friction is independent of surface area. Friction does not depend on the amount of surface area in contact between the moving bodies or within certain limits on the relative speed of the bodies.

The nature of the surfaces in contact. Yes greater the surface area coming into contact friction would increase. Friction is the product.

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. How does the amount of surface area in contact affect the amount of friction between two surfaces. In this regard does more mass mean more friction.

Pressure on the body. An object of large mass is pulled down onto a surface with a greater force than an object of low mass and as a consequence there is greater friction between the surface of the heavy object than between the surface and the light object. If we think of drag as aerodynamic friction then the amount of drag depends on the surface roughness of the object.

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. Temperature of the body. Beside this does surface material affect friction.

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