11th Class Physics Laws Of Motion / गति के नियम Question Bank 11th CBSE Physics NLM, Friction, Circular Motion

  • question_answer
    Why frictional force gets increased when two surfaces in contact are polished beyond a certain limit?

    Answer:

                    When surfaces in contact are polished beyond a certain limit, area of contact between them increases. Number of atoms/molecules of the surfaces in contact increases and distance between them decreases. Therefore, strong adhesive forces come into play. They are responsible for increasing the friction.                


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