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by experiment.
attach a pulley to the edge of a table.
attach a known weight to a string through the pulley to another known weight on the table-top.
put the particular surface who's coefficient of friction you wish to measure between the table top and the second known weight set on the table top.
allow the first know weight to fall.
measure its rate of descent.
compare its rate of descent with that of the free fall acceleration of gravity for your particular latitude.
you now have all the data you need to figure out the coefficient of kinetic friction.
can you do that yourself or do you need to know more?
Wiki User
∙ 11y ago
Wiki User
∙ 15y agorub a balloon against your hair or jumper. When oyur hair sticks up, that is kinetic friction!
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A solid homogenous sphere rolls without slipping down a plane that makes an angle of 30 degree with the horizontal find the linear acceleration of the sphere and the minimum coefficient of friction?
There is no minimum value for the coefficient of friction. And the linear acceleration will depend on its unknown value.
A box of mass 2 kg is set down on a plane inclined 30 degrees from the horizontal The coefficient of static friction is .5 the coefficient of kinetic friction is 0 What is the speed after 3 second?
the maximum value of limiting friction is = coff. of static fric. * normal force. in this case normal force =mgcosA=17N. the coff=0.5 so the maximum friction=0.5*17=8.5N. but the force acting downward on the incline is mgsinA which is =2*10*0.5=10N. as it has breached the value of friction,the block will move.now kinetic fric. will act.As the coff. of kinetic fric.=0,the surface is as good as a frictionless one.use the laws of kinematics to find the velocity(v=u+at,a=gsinA,t=3,u=0) hence the answer is=15m/s. in reality if there is a coff of static fric,ther ewill be a coff.of kinetic fric. good luck. regards carlitos tevez.
How do you find the minimum coefficient of static friction for a mass on an incline of 32 degrees?
The equation for friction is F=uN. F (friction), u (coefficient of friction), and N (normal). So you first need to solve for the normal by using Newton's second law. Also solve for the x component of the gravity force. Since it is static friction, you know it should be at rest, so that x component force should be the same as the force of friction. Knowing that and the normal, plug it into the equation and solve for u.
How do you find the coefficient of static friction?
Use the formula: FsMAX=μsFN if you want to do it experimentally, get the two different surfaces, and angle one until the object on top starts moving. take the tangent of the angle that starts the objects sliding past one another, and that is your coefficient of static friction.
2 ways to increase friction?
find a materials with a high coefficient of static friction and use them against each other ( like rubber dry concrete ) and bound them to the object and the surface it rests on. Increase the normal force by adding mass on the object or applying a perpendicular force to the surface of the object. I'm Laica Mae Montillano 1st year section 1 I'm studying at San Antonio National High School
How do you find kinetic friction?
kinetic friction found near when two men/women sex with each other
What is the coefficient of friction of stainless steel sheet astm a240 type 304?
You need to know both material involved in the friction to find the coefficient
A solid homogenous sphere rolls without slipping down a plane that makes an angle of 30 degree with the horizontal find the linear acceleration of the sphere and the minimum coefficient of friction?
There is no minimum value for the coefficient of friction. And the linear acceleration will depend on its unknown value.
What is the function of coefficient of static friction?
This coefficient of static friction is needed to find the frictional force between a body and a surface on which body has to move. If u (mu) is the coefficient of friction then uR gives the frictional force between moving body and surface. There is no unit for coefficient of friction. Here R is reaction which equals to the weight of the body
Should one add static friction and kinetic friction together to find the total friction force?
No. You use whichever applies: if an object is at rest, you use static friction. If it is moving, you use kinetic friction.
How can you find the coefficient of friction force only given mass and theta?
The coefficient of friction is the tangent of the angle theta where the angle is measured from horizontal when the mass first starts to slip
A box of mass 2 kg is set down on a plane inclined 30 degrees from the horizontal The coefficient of static friction is .5 the coefficient of kinetic friction is 0 What is the speed after 3 second?
the maximum value of limiting friction is = coff. of static fric. * normal force. in this case normal force =mgcosA=17N. the coff=0.5 so the maximum friction=0.5*17=8.5N. but the force acting downward on the incline is mgsinA which is =2*10*0.5=10N. as it has breached the value of friction,the block will move.now kinetic fric. will act.As the coff. of kinetic fric.=0,the surface is as good as a frictionless one.use the laws of kinematics to find the velocity(v=u+at,a=gsinA,t=3,u=0) hence the answer is=15m/s. in reality if there is a coff of static fric,ther ewill be a coff.of kinetic fric. good luck. regards carlitos tevez.
How do you find the minimum coefficient of static friction for a mass on an incline of 32 degrees?
The equation for friction is F=uN. F (friction), u (coefficient of friction), and N (normal). So you first need to solve for the normal by using Newton's second law. Also solve for the x component of the gravity force. Since it is static friction, you know it should be at rest, so that x component force should be the same as the force of friction. Knowing that and the normal, plug it into the equation and solve for u.
How do you find the coefficient of static friction?
Use the formula: FsMAX=μsFN if you want to do it experimentally, get the two different surfaces, and angle one until the object on top starts moving. take the tangent of the angle that starts the objects sliding past one another, and that is your coefficient of static friction.
What are the two factors that affect the amount of friction between two objects?
Friction is determined by the formula Friction = μFN or alternatively Friction = μFGcos(θ). Therefore the two factors are: (1) the coefficient of friction that depends on the two particular materials (μ) and (2) the normal force operating on the object that is pressing against a larger surface (FN / μFGcos(θ)). Normal force itself has three components upon which it depends: (a) the mass of the object upon which the force acts, (b) the gravity of the body on which the events take place (usually Earth), and (c) the angle of the surface as it deviates from a straight horizontal surface.
How do you find the acceleration without knowing the force?
it depends what else you know F=ma you can also use "SUVAT" S= displacement/distance u= initial velocity v= final velocity a= acceleration t= time the equations relating these are v^2=u^2+(2aS) v=u+at S=ut+(1/2at^2) S=vt-(1/2at^2) S=1/2(u+v)t
A 20kg toy wagon is pulled with an applied force of 35N. if the handle of the wagon is at 45, and the coefficient of friction is 0.1, find the acceleration of the wagon?
9.19 m/s^2
