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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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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
Forces of any two materials the force required to overcome sliding fiction is greater than the force to overcome starting friction?
If I understand the question correctly: It is actually ill-posed. The frictions you are refering to are dynamic (sliding) and static (starting). I think you will find that static friction is always harder to over come than dynamic friction, not vice-versa.
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.
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
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 find the acceleration of a pushed object?
Resultant force divided by mass
How do you find force when given a constant speed and force of friction?
If the speed is constant, then the group of forces acting on the object is balanced. So the portion of the force acting in the direction of the motion must be equal and opposite to the force of friction.
How do you calculate the friction in a pulley?
To find the velocity ratio of a pulley, you must first find the effort and load distances. then you divide the two and there you have you VR (velocity ratio).
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.
Could someone help me with this problem.. Find the coefficient of friction that is needed to keep a 1kg book from sliding down a 30 degree ramp?
book = 1kg, then force down slope = 1*sin 30 = 0.5 kg force of book on surface = 1*cos 30 = 0.866kg 0.5/0.866 = 0.577
What type of FORCE is needed to start and ice skater moving?
i cant find the answer! I think it is blanced
