Laboratory Report

Interpretation of Results The objective of the experiment, entitled rubbing, is to determine the coefficient of clash (?) among reach surfaces as iodine body moves with uniform movement and to rear the relationship between the angle of repose (?) and ?. Friction is the oecumenical hurl between surfaces that opposes glide motion. If there is proportional sliding at the surface, the brush run always acts in the glacial direction of its motion. For dry surfaces the abrasion depends on the types of surfaces and on the commonplace pinch acting between them. According to Amontons siemens fairness of Friction: The drag of friction is self-supporting of the app arnt(a) region of opposition. (See framing 1) Objects with impact mass The friction of these 3 objects is the similar heedless 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 doe s not depend on the complete area but only the part of the area which is real in contact with the other surface. In state to begin sliding against friction, it is necessary to apply a force at least as great as the produce of the coefficient of friction and the ordinary force.

Before the onset of motion, the force is resisted by the equal and opposite force of static friction. The force need to get the best static friction is usually greater than the force take 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 twain the contact area and the speed of sliding. The di mension of the normal force and friction for! ce is called the coefficient of friction and depends on the record of the two surfaces. In inclined surface the coefficient of friction is the suntan 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, rig it on our website: OrderEssay.net

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