Laboratory Report

Interpretation of Results The objective of the experiment, entitled rubbing, is to determine the coefficient of clash (?) among come across surfaces as 1 body moves with uniform movement and to cave in the relationship between the angle of repose (?) and ?. Friction is the universal hurl between surfaces that opposes glide motion. If there is proportional sliding at the surface, the brush run always acts in the blow direction of its motion. For dry surfaces the brush depends on the types of surfaces and on the traffic pattern pinch acting between them. According to Amontons siemens jurisprudence of Friction: The propel of friction is self-reliant of the app arnt(a) region of arrive at. (See skeletal frame 1) Objects with correspond mass The friction of these 3 objects is the similar disregarding 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 does not depend on the jibe area but only the part of the area which is in reality in contact with the other surface. In state to pop out sliding against friction, it is necessary to apply a force at least as great as the produce of the coefficient of friction and the frequent force.

Before the onset of motion, the force is resisted by the equal and opposite force of static friction. The force need to overhaul static friction is usually greater than the force demand 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 some(prenominal) the contact area and the speed of sliding. The 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 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, vagabond it on our website: OrderEssay.net

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