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There's no way to know, all you can say is that the upward friction force = 98,1N, and thus that the static friction coeff is bigger than 98,1/100=0,981.
To know the static coeff, you should gradually make the horizontal force smaller and see when the block falls down.
As for the kin. coeff, you should know the acceleration at which it is falling down.
What else can I help you with?
How do you raise and lower frictional forces?
You can increase frictional forces by roughening the surfaces in contact, increasing the weight pressing the surfaces together, or using materials with higher coefficients of friction. To decrease frictional forces, you can use lubricants, reduce the weight pressing the surfaces together, or choose materials with lower coefficients of friction.
If your pulling 30 lb tire on a lawn what is the estimated weight youre actually pulling because of friction?
the equation for static friction coefficient is:static friction coefficient = force required to break bond / weight of object (tire)you need the friction coefficient between rubber and grass, say its 0.5, this means the force you have to apply to equal the friction force is:0.5 = x / 30x = 0.5 * 30x = 15 lbs fanything greater than 15 lbs f will break the bond and accelerate the tire.notes :1 / moving friction coefficient is usually less than static friction coefficient, so youve less drag once its moving.2 / friction coefficients are never greater than 1.0actually , some friction coefficients do exceed 1.0 , see google / friction coefficients table
What is coeffitient of stactic n kinetic friction?
The coefficient of static friction is the ratio of the force required to move an object to the force pressing the surfaces together when the object is not moving. The coefficient of kinetic friction is the ratio of the force of friction between two objects in motion to the force pressing them together. Both coefficients are dimensionless values specific to the two surfaces in contact.
A force of 320 N is required to pull a box across the floor at a constant velocity What is the force of friction between the floor and the box?
It's 320 N. Since the friction force is in the direction opposite to the motion, thepulling force and the friction force balance, the net horizontal force on the box iszero, and its speed is therefore constant.
A horizontal force of 40 newtons will just start a 600 newton empty sled moving across packed snow what is the coefficients of static and kinetic friction?
static friction= normal contact force*coefficient of static friction 40 = (600*9.8) * CSF CSF=40/(600*9.8) (you can calculate that yourself, i cant be bothered) there isn't enough info to work out the coefficient of kinetic friction
How can you increase the magnitude of friction between two surfaces How can you decrease the magnitude of friction?
To increase friction, you can increase the roughness of the surfaces in contact, increase the normal force pressing the surfaces together, or use materials with higher coefficients of friction. To decrease friction, you can use lubricants to reduce surface roughness and create a barrier between the surfaces, reduce the normal force acting on the surfaces, or use materials with lower coefficients of friction.
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
What determines the strength of the friction force?
The strength of the friction force is determined by the nature of the surfaces in contact, the magnitude of the normal force pressing the surfaces together, and the coefficients of friction between the surfaces. It is also influenced by factors such as the roughness of the surfaces and any contaminants present.
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.
Why are coefficients of friction unitl-ess values?
Coefficients of friction are unitless values because they represent the ratio between the force necessary to overcome friction and the force pressing two surfaces together. Since the units cancel out in this ratio, coefficients of friction are expressed as pure numbers without units.
How can you decrease magnitude of friction?
you don't.
What has the author I I Blekhman written?
I I. Blekhman has written: 'On effective coefficients of friction for vibrations'
What pattern do you notice about the values for the coefficients of friction?
The coefficient of friction typically ranges from 0 to 1, with 0 indicating no friction and 1 indicating high friction. The coefficient of friction depends on various factors such as the surfaces in contact, surface roughness, and whether the surfaces are in motion or at rest. In general, smoother surfaces have lower coefficients of friction compared to rougher surfaces.
What happened to the coefficients of friction as the weight increased?
Nothing. The coefficient of friction is constant, as it is dependent on the surfaces that are interacting. Normal force increases as an objects mass increases (Be careful with the word "weight", as it denotes the effect of gravity) in a constant gravitational field. This normal force is what causes an increase in friction.
What is magnitude of friction force?
The magnitude of the friction force is dependent on the normal force acting between two surfaces. It is given by the equation F_friction = μ * N, where μ is the coefficient of friction and N is the normal force.
How do friction and gravity relate?
The magnitude of friction is proportional to the magnitude of the normal force which is proportional to the magnitude of gravity(The magnitude of the normal force is indirectly proportional to the magnitude of gravity.). The magnitude of the normal force, N, compared to gravity, G, on angle z, is: N=cos(z)*G On a flat surface. N=G The coefficient of friction, whether static or kinetic, f is therefore: N=cos(z)*G*f
