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Friction varies from surface to surface because different substances are rougher than others. Table 5.2 compares values of static and kinetic friction for different surfaces. The coefficient of the friction depends on the two surfaces that are in contact.
In this experiment, the frictional force between a wooden block and the wooden surface of a horizontal and inclined plane will be derived and measured. By graphing these data, coefficients of static and kinetic friction will be obtained.
Static and Kinetic Friction on an Inclined Plane. This is a simulation of the motion of an object on an inclined plane. The incline angle can be varied from 0 to 90 degrees. The forces acting on the object: gravity, normal force of the incline, and friction are represented as vectors.
Objectives: To measure the coefficients of static and kinetic friction between a wooden block and a wooden plane. Figure 1- Block on incline plane. Theory. Friction is the force that resists the relative motion of one surface in contact with another. There are two types of friction: static and kinetic.
friction can be modeled as being proportional to the normal force Fn between the wheel and the surface on which it rolls, directed opposite to the velocity of the center of the wheel, with magnitude fr = r Fn, (1) where r is the (small) coefficient of rolling friction.
In this lab you will explore some of the properties of friction and use different methods to measure the coefficient of friction. Equipment. Smart cart, hook, mass set, string, aluminum track, meter stick, wooden block, digital scale. Preliminary questions. a.
Learn the forces involved in incline planes with and without friction. See how to solve for acceleration of an object created by the net force.
