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# How does the coefficient of friction depend upon the area of contact explain

Oct 09, 2003 · 1. Does a graph of force of friction vs force normal pass through the origin? Explain. 2. Does the force of kinetic friction depend on the weight of the object? Explain. 3. Does the coefficient of kinetic friction depend on the weight of the object? explain This is not on an icline plane. It does not depend the area of contact, it doesn't depend on the sliding speed. Next, there will probably be some type of friction laboratory experiment. In this lab, students will measure...

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• The coefficient of static friction is the minimum force required to get an object to slide on a surface, divided by the forces pressing them together. There are no units associated with ...
• How it does not depend on area of contact. \$\endgroup\$ – Srinivas Rathikrindi Feb 10 '16 at 3:03 \$\begingroup\$ Important point: the non-dependence on surface are is an approximate condition that applies when neither body is permanently or significantly deformed. For the case of a brick sliding on a clean wooden table, the coefficient of kinetic friction is about 0.5, which implies that a force equal to half the weight of the bricks is required just to overcome friction in keeping the bricks moving along at a constant speed, and the coefficient of static friction is about 0.6.
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• Jan 10, 2019 · Using the same method for measuring friction that was used in the previous lesson (Discovering Friction), students design and conduct experiments to determine if the amount of area over which an object contacts a surface it is moving across affects the amount of friction encountered. For the case of a brick sliding on a clean wooden table, the coefficient of kinetic friction is about 0.5, which implies that a force equal to half the weight of the bricks is required just to overcome friction in keeping the bricks moving along at a constant speed, and the coefficient of static friction is about 0.6.
• Well, friction doesnot depend on area of contact doesnt make much sense, but actually is true. Consider the static friction between two bodies. The friction is actually caused by the interlocking of the microscopic surface protrusions of both bodies. Thus the level of interlocking decides the amount of friction b/w them.

The friction force due to gravity (1) can with (2) be modified to. F f = μ m a g (3) Friction Force Calculator. m - mass (kg, slugs) a g - acceleration og gravity (9.81 m/s 2, 32 ft/s 2) μ - friction coefficient. Friction forces on inclined planes; Weight vs mass - the difference

1. Does the coefficient of sliding friction depend on the area that is in contact? Verify your answer by explaining using the results for your data calculations. 2. Why is the wooden block started with a sight push in the procedure for finding the coefficient of sliding friction? 3. How do the values of µ for Part A compare to part B? 1. Does the coefficient of sliding friction depend on the area that is in contact? Verify your answer by explaining using the results for your data calculations. 2. Why is the wooden block started with a sight push in the procedure for finding the coefficient of sliding friction? 3. How do the values of µ for Part A compare to part B?

Dec 10, 2010 · 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.

They depend only on the materials in contact and independent of the area of contact. . In this experiment, using the board in a horizontal position, we measure the frictional force fk and fs as they vary with respect to the normal force n. Using the second law of motion, we can calculate the coefficients of friction between block and board. May 04, 2011 · a.) area of surfaces in contact? Strangely, it doesn't depend on the area. The two coefficients of friction are dimensionless--i.e., they aren't given in terms of x newtons per m^2, and you don't have to know the area to calculate the frictional force. 1.) Does the coefficient of friction depend on the area of the surfaces in contact? Explain. 2.) Does the coefficient of friction depend on the mass of the object?

The coefficient of friction (μ) is the ratio defining the force that resists the motion of one body in relation to another body in contact with it. This ratio is dependent on material properties and most materials have a value between 0 and 1.

The value of the coefficient of friction varies from zero to one. There are two types of the coefficient of friction: Static coefficient of friction; Kinetic (also known as sliding) coefficient of friction. Therefore, the coefficient of friction depends on the nature of the surface.

The coefficient of static friction is the minimum force required to get an object to slide on a surface, divided by the forces pressing them together. There are no units associated with ...

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Does the coefficient of kinetic friction depend on speed? Explain, using your experimental data. In my lab I calculated the acceleration of a wooden block stopping after being pushed (data below) with a motion detector. The coefficient of kinetic friction I calculated is much greater than the one I got with just pulling the block.

In short, friction very much does depend on the surface area but to see those effects you must model the surfaces AND their defects to see that there is a benefit. Complexity theory is one of the few realms of math that aims to get at a closed form solution for this type of thing that can usually only be understood using finite element analysis.

Therefore two coefficients of friction are sometimes quoted for a given pair of surfaces - a coefficient of static friction and a coefficent of kinetic friction. The force expression above can be called the standard model of surface friction and is dependent upon several assumptions about friction. The co-efficient of friction depends upon a) nature of surfaces b) area of contact c) shape of the surfaces d) ail of the above.

by the coefficient of kinetic friction µ, which is defined by the equation µ = Ffric/! F N. Ideally, the coefficient of kinetic friction only depends on the nature of the surfaces. It does not depend on any other factors, including the relative speed of the surfaces and the surface area of contact. You will determine µ.

Jun 19, 2011 · If you check any of the reliable published sources, you'll find that the coefficient of friction depends only on the natures of the two surfaces in contact and NOT on the area of contact. Strange,...

If you press down upon a sliding block, the force of friction increases but u does not. Explain. the coefficients of fiction does not increase b/c The friction resistance is almost independent of the specific pressure between the surfaces. 6)6. Why are there no units for u? The coefficient of friction (mu) is the ratio of the force of friction ...

The force due to friction is generally independent of the contact area between the two surfaces. 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 friction force due to gravity (1) can with (2) be modified to. F f = μ m a g (3) Friction Force Calculator. m - mass (kg, slugs) a g - acceleration og gravity (9.81 m/s 2, 32 ft/s 2) μ - friction coefficient. Friction forces on inclined planes; Weight vs mass - the difference

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Oct 09, 2003 · 1. Does a graph of force of friction vs force normal pass through the origin? Explain. 2. Does the force of kinetic friction depend on the weight of the object? Explain. 3. Does the coefficient of kinetic friction depend on the weight of the object? explain This is not on an icline plane. The coefficient of static friction is the minimum force required to get an object to slide on a surface, divided by the forces pressing them together. There are no units associated with ... .

The friction force due to gravity (1) can with (2) be modified to. F f = μ m a g (3) Friction Force Calculator. m - mass (kg, slugs) a g - acceleration og gravity (9.81 m/s 2, 32 ft/s 2) μ - friction coefficient. Friction forces on inclined planes; Weight vs mass - the difference

and normal force. The coefficient of friction depends on the materials in contact with each other. The normal force (the force holding them together) increases only the magnitude of friction. If... Both static and kinetic coefficients of friction depend on the pair of surfaces in contact. Their values are determined experimentally. For a given pair of surfaces, the coefficient of static friction is larger than the kinetic friction. The coefficient of friction depends on the materials used.

Until now in physics, you've probably been ignoring friction to make things simpler. Now, it's time to include this very real force and see what happens. If you're seeing this message, it means we're having trouble loading external resources on our website. The coefficient of friction on a macroscale is higher than that on a microscale for comparable contact stresses. When measured for the small apparent area of contact and very small loads used in ... Jan 10, 2019 · Using the same method for measuring friction that was used in the previous lesson (Discovering Friction), students design and conduct experiments to determine if the amount of area over which an object contacts a surface it is moving across affects the amount of friction encountered.

The coefficient of friction depends on the objects that are causing friction. The value is usually between 0 and 1 but can be greater than 1. A value of 0 means there is no friction at all between the objects; such is possible with Superfluidity. All objects, otherwise, will have some friction when they touch each other. Dec 24, 2010 · My books say that friction is independent of the area of contact, but only depends upon the coefficient of friction and the weight of body. but well according to my science, there is something wrong with it. because you observe, take same masses but different geometeries for example rectangular... Apr 25, 2007 · The coefficient of static friction depends upon the roughness of the surfaces. The coefficient of static friction does not depend upon contact surface area, provided the two surfaces are made of dissimilar enough material so that any cohesive force between the two surfaces is small. Jun 19, 2011 · If you check any of the reliable published sources, you'll find that the coefficient of friction depends only on the natures of the two surfaces in contact and NOT on the area of contact. Strange,... Friction and Area of Contact. Part of the standard model of surface friction is the assumption that the frictional resistance force between two surfaces is independent of the area of contact. While exceptions exist, the assumption has enough validity to be useful in many circumstances.

Friction is proportional to the normal force of the asphalt acting upon the car tires. This force is simply equal to the weight which is distributed to each tire when the car is on level ground. Force can be stated as Pressure X Area. For a wide tire, the area is large but the force per unit area is small and vice versa.

Oct 09, 2003 · 1. Does a graph of force of friction vs force normal pass through the origin? Explain. 2. Does the force of kinetic friction depend on the weight of the object? Explain. 3. Does the coefficient of kinetic friction depend on the weight of the object? explain This is not on an icline plane. Friction is a contact force when two surfaces interact. ... Notice that both of these friction formulas ONLY depend on the coefficient of friction and the normal force. It does not depend the area of contact, it doesn't depend on the sliding speed. Dec 10, 2010 · 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.

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Well, friction doesnot depend on area of contact doesnt make much sense, but actually is true. Consider the static friction between two bodies. The friction is actually caused by the interlocking of the microscopic surface protrusions of both bodies. Thus the level of interlocking decides the amount of friction b/w them.

Jun 12, 2015 · does friction depend upon area of contact in any case if we consider electrostatic forces between bodies are significant. Posted 4 years ago. View Answer 1 .The ...

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May 04, 2011 · a.) area of surfaces in contact? Strangely, it doesn't depend on the area. The two coefficients of friction are dimensionless--i.e., they aren't given in terms of x newtons per m^2, and you don't have to know the area to calculate the frictional force. For the case of a brick sliding on a clean wooden table, the coefficient of kinetic friction is about 0.5, which implies that a force equal to half the weight of the bricks is required just to overcome friction in keeping the bricks moving along at a constant speed, and the coefficient of static friction is about 0.6. How it does not depend on area of contact. \$\endgroup\$ – Srinivas Rathikrindi Feb 10 '16 at 3:03 \$\begingroup\$ Important point: the non-dependence on surface are is an approximate condition that applies when neither body is permanently or significantly deformed.

Jun 19, 2011 · If you check any of the reliable published sources, you'll find that the coefficient of friction depends only on the natures of the two surfaces in contact and NOT on the area of contact. Strange,... The coefficient of friction (μ) is the ratio defining the force that resists the motion of one body in relation to another body in contact with it. This ratio is dependent on material properties and most materials have a value between 0 and 1. The force due to friction is generally independent of the contact area between the two surfaces. 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 coefficient of friction (μ) is the ratio defining the force that resists the motion of one body in relation to another body in contact with it. This ratio is dependent on material properties and most materials have a value between 0 and 1. Coefficient of Friction. Professor: Robert Hage . PRE LAB QUESTIONS. Due before lab begins. 1) Explain briefly the different types of frictional forces. 2) How does the coefficient of friction depend upon the area of contact? Explain. Give some examples in which the force of friction causes the object to accelerate.

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Dec 24, 2010 · My books say that friction is independent of the area of contact, but only depends upon the coefficient of friction and the weight of body. but well according to my science, there is something wrong with it. because you observe, take same masses but different geometeries for example rectangular...
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