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Contacting surfaces can be of various materials
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What pattern do you notice about the values for the coefficients of friction?
The value of static friction is higher than the value of kinetic (sliding) friction.
The amount of friction divided by the weight of an object forms a unitless number called the of friction?
I think it is the coefficient of friction
What are microwelds?
Table of CoefficientsThe coefficient of kinetic friction is always less than or equal to that of static friction.The table below shows many coefficients of friction. Notice that each value is always given for a pair of surfaces. Friction doesn't work unless there are two surfaces.Also note that there are values shown for both static friction and kinetic friction. Static friction deals with starting to move something, while kinetic friction deals with keeping something moving once it's already in motion.In each case, it's also important to note that the coefficients of kinetic friction are always less than or equal to the coefficients of static friction. objectWrite('');Coefficients of Friction for Pairs of SurfacesSurfaces in ContactCoefficient of Static Friction (s)Coefficient of Kinetic Friction (k)Wood on wood0.50.3Waxed ski on snow0.10.05Ice on ice0.10.03Rubber on concrete (dry)1.00.8Rubber on concrete (wet)0.70.5Glass on glass0.940.4Steel on aluminum0.610.47Steel on steel (dry)0.70.6Steel on steel (lubricated)0.120.07Teflon on steel0.040.04Teflon on Teflon0.040.04
What is the force of friction equation?
Equation: Ff=μFnFf= force of frictionFn= normal force (mass x 9.81 m/s2)μ= "mu" which is the coefficient of friction, it is unitless
What are two examples of two surfaces that have a high coefficient of friction?
Sandpaper and asphalt both have relatively high coefficients of friction.
What pattern do you notice about the values for the coefficients of friction?
The value of static friction is higher than the value of kinetic (sliding) friction.
The amount of friction divided by the weight of an object forms a unitless number called the of friction?
I think it is the coefficient of friction
What is the amount of friction divided by the weight of an object forms a unitless number called the blank of friction?
coefficient
Why do materials have different coefficient of friction?
Different materials have different coefficients of friction because the materials have different microscopic bumps and valleys which cause the friction to begin with. Coefficients of friction are constant for each material.
What two kinds of coefficients of friction exist?
Static and kinetic coefficients
The amount of friction divided by the weight of an object forms a unitless number called the ... of friction?
coefficientThe amount of friction divided by the weight of an object forms a dimensionless number called the coefficient of friction.
Why is it difficult to start a cart than to pull it after starting?
Because the coefficients of static friction in the bearings etc. are (as always) larger than the corresponding coefficients of dynamic friction.
What are microwelds?
Table of CoefficientsThe coefficient of kinetic friction is always less than or equal to that of static friction.The table below shows many coefficients of friction. Notice that each value is always given for a pair of surfaces. Friction doesn't work unless there are two surfaces.Also note that there are values shown for both static friction and kinetic friction. Static friction deals with starting to move something, while kinetic friction deals with keeping something moving once it's already in motion.In each case, it's also important to note that the coefficients of kinetic friction are always less than or equal to the coefficients of static friction. objectWrite('');Coefficients of Friction for Pairs of SurfacesSurfaces in ContactCoefficient of Static Friction (s)Coefficient of Kinetic Friction (k)Wood on wood0.50.3Waxed ski on snow0.10.05Ice on ice0.10.03Rubber on concrete (dry)1.00.8Rubber on concrete (wet)0.70.5Glass on glass0.940.4Steel on aluminum0.610.47Steel on steel (dry)0.70.6Steel on steel (lubricated)0.120.07Teflon on steel0.040.04Teflon on Teflon0.040.04
What is the force of friction equation?
Equation: Ff=μFnFf= force of frictionFn= normal force (mass x 9.81 m/s2)μ= "mu" which is the coefficient of friction, it is unitless
What are two examples of two surfaces that have a high coefficient of friction?
Sandpaper and asphalt both have relatively high coefficients of friction.
What has the author I I Blekhman written?
I I. Blekhman has written: 'On effective coefficients of friction for vibrations'
The coefficient of friction is a blank number that represents the resistance to sliding between two blank in contact with one another?
Unitless, surfaces
