describe an activity to show rhat the force of friction between two sirface depends on thr nature of two durface im comtact
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To see the effect of friction on different surfaces. 1 Take a sheet of paper, a handkerchief, a hand towel, a rectangular piece of glass and wood as surfaces and a pencil. 2 Now roll the pencil on each surface. 3 Number the surfaces in the order in which the pencil rolled easily on them.
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