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Introduction This scientific experiment seeks to investigate the force of frictionand the interpretation of the coefficient of friction both static andkinetic All the concepts of force of friction sliding of objects on aninclined plane gravity force free-body diagrams and normal force areutilized Various blocks with different backings a motion sensor withGLX data collecting interface and inclined plane are used also usedExperimentally it is found that the amount of force needed to slide orpull a single object over another one is proportional to the normalforce exerting their areas of contact is expressed by Ff N whereby is the coefficient of friction and denotes the nature of contactsurfaces Additionally one may also think that force must also dependon the motion speed and area of contact This is studied theoreticallyand experimentally To start with proving that the force needed to make a body to beginmoving is higher than the force needed to keep the same body moving arelationship between coefficient of static friction s and coefficientof kinetic friction k is determined and generally s k A block is place on a slanted plane and it is increased gradually fromzero Initially static friction makes the block to stick to theinclined plane With increase in the angle the force of gravityincreases downhill along the plane and the static friction increasesuphill stepwise so that the total force on the block maintains at zeroWhen the angle becomes big the force downhill overcomes the maximumstatic friction and the block becomes loose then begins sliding downThe angle is known as angle of repose Ff
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