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A sled is pushed with 30 N and sliding friction is 10 N Find the net force on the sled?
Wiki User
∙ 14y ago
the net force is 20 newtons because friction always works against direction of motion.
Wiki User
∙ 14y ago
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Forces of any two materials the force required to overcome sliding fiction is greater than the force to overcome starting friction?
Sliding friction is generally higher than static friction because the surfaces are already in motion, making it harder to keep them moving at a constant velocity. The force required to overcome static friction and initiate motion (starting friction) is usually lower than the force required to overcome sliding friction and maintain motion.
How can you measure the sliding friction?
In physics a number known as the 'coefficient of friction' is used to calculate the frictional force between any two surfaces. Ff=µFn, Meaning that the frictional force (Ff) is equal to the coefficient of friction (µ) multiplied by the normal force (Fn). If one wishes to calculate the coefficient of friction for two objects, you can pull an object of whatever material you wish along a floor of whatever material you wish. As long as the object remains at a constant speed, the force which you use to pull the object (which can be measured by a force meter) is equal to the frictional force. Once you find the normal force (to find the normal multiply the mass of the object by the acceleration due to gravity on your part of the world, Fn= mg) you simply divide the frictional force by the normal force and you have the coefficient of friction. or just ask your teacher lol
How do you use sliding friction in everyday life?
u just find it in a book aroni:D
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 normal force and force of friction of an object on a incline?
To find the normal force on an object on an incline, you can use the component of the object's weight perpendicular to the incline. The force of friction can be calculated using the coefficient of friction between the object and the incline, along with the normal force.
What is the coefficient of sliding friction A horizontal force of 100 newtons is applied to a 25kg sack of potatoes Starting from rest The sack achieves a velocity of 2.0ms in 4 secs full answer plz?
fFirst let us find the acceleration. a = v-u / t u = 0 ; v = 2 and t = 4s So a = 0.5 m/s^2 Hence the force on 25 kg will be 12.5 N But applied force is 100 N. So the sliding frictional force = 100-12.5 = 87.5 N Frictional force = uk R = uk m g Hence coefficient of sliding friction = 87.5 / 25*9.8 = 0.357
Should one add static friction and kinetic friction together to find the total friction force?
No, static friction and kinetic friction are separate forces that act in different situations. When an object is at rest, static friction opposes the applied force. When the object is in motion, kinetic friction opposes the motion. To find the total friction force, you would just consider the friction force relevant to the situation.
Methods to reduce friction?
There are two most widely used methods to reduce friction__Using lubricants.Converting Sliding Friction into Rolling Friction
How do you calculate the friction in a pulley?
To calculate the friction in a pulley, you can use the formula: Friction = µ * N, where µ is the coefficient of friction and N is the normal force acting on the pulley. The coefficient of friction represents how "rough" the surfaces in contact are. By multiplying the coefficient of friction with the normal force, you can determine the amount of friction in the pulley system.
What is the function of coefficient of static friction?
The coefficient of static friction quantifies the maximum force required to initiate movement between two surfaces in contact with each other without sliding. It is a dimensionless quantity that depends on the materials of the surfaces in contact and helps determine the stability of objects at rest.
How do you find the acceleration of a pushed object?
You can find the acceleration of a pushed object by dividing the net force acting on the object by its mass, using the formula a = F/m, where a is the acceleration, F is the net force, and m is the mass of the object.
How do you find the friction of a pulley?
To find the friction of a pulley, you can determine the tension in the rope on either side of the pulley and use that to calculate the force of friction based on the coefficient of friction between the rope and the pulley. The friction force will depend on the weight being lifted and the forces acting on the system.
