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Friction on an Incline Plane

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#811 Friction on an Incline Plane. This simple device is useful in studying friction and the varying degrees of friction in relation to an incline.  The unit is made of smooth wood with a metal pulley attached to the incline and a large protractor for accurately recording the angle of incline.  Three different sized boards with eyehooks are also included for study of how displacement, surface contact, and weight affect frictional forces.  Instructions provided.