# determining the static and kinetic rubbing of

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An additional objective was to compute the measurement in the coefficient of kinetic chaffing between wood to solid wood and real wood to Auber by computing the time over which the prevent of real wood is sliding down the airplane and the length over which this slid. Utilizing a ramp and a solid wood block with two areas that were protected with plastic, the create was prepared to start the first portion of the experiment. The angle the place that the wooden block would start to slide was determined in a trial and error manner by five trials.

To get coefficient of static scrubbing, the perspective of small area for wood to wood was 130 even though the angle of larger area was 160. For real wood to rubber, the angles for large and small area had been 280 and 310 correspondingly. On the second part of the experiment, the create was still the same like the 1st but the perspectives were bigger. The effects that were gathered were the acceleration as well as the time of the smaller area and bigger area to get wood as well as with rubber.

Overall, some factors affect the coefficient of friction just like surface temperature and pressure and the weight and roughness of thing. It was likewise concluded that the objectives on this experiment have been completely successfully fulfilled. INTRODUCTION Rubbing is considered to be the wicked of all motion since they tend to exert power opposite the direction of the moving thing, resulting to a slower speed. Scientifically chaffing is determine as the resistive pressure acting among bodies that tends to are at odds of the action of an thing, and regarded as perpendicular towards the surface. 1] This kind of force verticle with respect to the surface of the subject in action or at rest is the usual force of the object this provides the amount of contact force pushing both the surface at the same direction and that normal power is always equal and opposing to the fat of the target This resistive force is mainly due to the roughness or the anomaly of rubbing usually makes heat since when two objects come in contact they tend to pub one another.

Another factor that influences the frictional force necessary is the pourcentage of rubbing and it is a measure of how an object is usually move that may be how much push one should apply to move the object in a specific direction. In theory this pourcentage of rubbing is proportional to the frictional force.

In addition to two rapport of fraction a certain target have and this are the agent of static friction and coefficient of kinetic scrubbing that is thought as the ratio of frictional force towards the normal pressure on the subject. and in order to an object to move 1 must get over its pourcentage of strategy friction, to put it briefly one must exert greater force in comparison to the weight from the object.

Via Conical, a subject at rest uses a larger force to receive moved resistant to the frictional pressure than to continue to keep it moving In this kind of experiment the group aim to compute the measurement in the coefficient of static rubbing and the pourcentage of kinetic friction among wood to wood and also wood to rubber TECHNIQUE In this try things out there are two parts of the process, first is definitely the measurement from the coefficient of static scrubbing and second is the way of measuring of the pourcentage for the kinetic rubbing.

The scrubbing of a ramp and the wood and also the ramp and rubberized was determined. The supplies used were a ramp and a wooden obstruct with 2 surfaces covered with plastic. Figure five. 1 Wood made Block With 2 Floors Covered With Rubber In measuring the coefficient of static friction (AS), the set-up was prepared. The ramp was placed in the table, then your wooden prevent was added to the bring. The viewpoint were the wooden block would commence to move or slide was determined by training the ramp in a experimentation manner. This is done intended for five trials.

The viewpoint were the tiny area of the wood made block was determined 1st then subsequent is the large area, following as the little area of the plastic surface then last was the large part of the rubber area. The coefficient of stationary friction was determined making use of the equation as = tang. Next portion was identifying the coefficient of static friction, a software device to measure friction that was being developed by a few personnel of University of the Philippines Baggie was used. The length of the block was tested then the bring was going an angle greater than the critical position of solid wood to solid wood measured in the first part of experiment.

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