Investigation into Friction.

... INVESTIGATION INTO FRICTION Aim Our aim is to investigate the relationship between the frictional force between two surfaces, and the force needed to make the surfaces slide over one another. The investigation will also be into the type of surface and the amount of frictional force, and the force needed to make the surfaces slide. We will also be investigating the coefficients of friction on different surfaces. Theory Friction is the name given to the force, which opposes the relative sliding motion of two surfaces in contact with one another, as Ordinary Level Physics1 by AF Abbott tells us. This means that when two objects slide over one another, or touch one another, there is a frictional force present that tries to stop any sliding movement. The attractive forces between the molecules on the two surfaces cause friction, the Ordinary Level Physics says. Fig 12 shows two surfaces, and the cause of friction between

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