JEE Main & Advanced Physics NLM, Friction, Circular Motion Sample Paper Topic Test - Friction

  • question_answer
    What is the minimum stopping distance for a vehicle of mass m moving with speed v along a level road. If the coefficient of friction between the tyres and the road is \[x=40\,cm\]

    A) \[\frac{{{v}^{2}}}{2\mu g}\]               

    B) \[\frac{2{{v}^{2}}}{\mu g}\]

    C) \[\frac{{{v}^{2}}}{\mu g}\]                             

    D) none of these

    Correct Answer: A

    Solution :

    \[{{0}^{2}}={{V}^{2}}-2\,\mu gs\]
    \[\Rightarrow s=\frac{{{V}^{2}}}{2\,\mu g}\]     [a].

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