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Sliding Friction

Abstract

Friction provides reaction forces that are necessary for the normal functioning of a bicycle, it is also a cause of energy loss in mechanical systems. Measurements will be made of both the static and sliding friction between a surface and a block loaded with various weights. Experience indicates that the materials of the contact surfaces are important in determining the magnitude of friction forces, and several different surfaces will be tested under dry and wet interface conditions. Tangiental loads will be applied to the block by inclining the test surface on which the block is placed with respect to the horizontal. Blocks of different geometry will be examined and the conditions required for sliding rather than tipping will be explored.