Normal force - normal force) the surfaces are actually in...

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Normal force Though it is rather surprising that frictional force and normal force are related in such a simple manner, physical intuition tells us that they should be directly related. Consider again a block of wood on a concrete platform. The normal force is given by the weight of the wood. If an additional downward force is applied to the wood (producing a greater
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Unformatted text preview: normal force) the surfaces are actually in closer contact than they were before, and the resulting electrical interactions are stronger. Thus, intuitively, a greater normal force yields a greater frictional force. ....
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