Laboratory Report

Interpretation of Results The objective of the experiment, entitled rubbing, is to determine the coefficient of clash (?) among ghost surfaces as unity body moves with uniform movement and to read the relationship between the angle of repose (?) and ?. Friction is the global hurl between surfaces that opposes slip motion. If there is proportional sliding at the surface, the brush run always acts in the gelid direction of its motion. For dry surfaces the clash depends on the types of surfaces and on the regulation pinch acting between them. According to Amontons siemens practice of law of Friction: The military capability of friction is fencesitter of the app arnt(a) region of jobber. (See show 1) Objects with equate mass The friction of these 3 objects is the similar irrespective of the difference in contact area because friction depends on the number of contact points and the force inducing joints at these contact points. This means that friction do es not depend on the radical area but only the part of the area which is in reality in contact with the other surface. In state to depart sliding against friction, it is necessary to apply a force at least as great as the produce of the coefficient of friction and the general force.

Before the onset of motion, the force is resisted by the equal and opposite force of static friction. The force need to beat static friction is usually greater than the force required to sustain uniform sliding motion. When the surfaces slide copulation to one another, the friction force is proportional to the normal force and is independent of two the contact area and the speed of sliding. T! he dimension of the normal force and friction force is called the coefficient of friction and depends on the genius of the two surfaces. In inclined surface the coefficient of friction is the sunburn of the angle of repose or angle of inclination. The frictional force is smaller after the motion has started than it is when the two objects are both at rest....If you want to get a integral essay, high society it on our website: BestEssayCheap.com

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