conduct an experiment to find out the effect of roughness on frictional force
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On any rough surface, e.g. a road, place a rough wooden block and try to push it. You will notice that the block takes your extra energy to get pushed.
This happens because of the frictional force which is present on both the surfaces.
That is the interlock between the two bodies. This is called friction.
This happens because of the frictional force which is present on both the surfaces.
That is the interlock between the two bodies. This is called friction.
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