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

  • question_answer
    How does a lubricant help in reducing friction?

    Answer:

                    When a lubricant is added to a machine, it spreads between the two surface rubbing each other, fills the irregularities present on the surface and forms a thin layer between the surface in contact. As a result of it, the contact between the two hard surfaces is replaced by the contact between the hard surface and lubricant layer. Due to it, the force of friction of friction is reduced considerably.


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