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JEE Main & Advanced Physics NLM, Friction, Circular Motion Question Bank Kinetic Friction

  • question_answer
    A car turns a corner on a slippery road at a constant speed of \[10\,m/s\]. If the coefficient of friction is 0.5, the minimum radius of the arc in meter in which the car turns is

    A)  20      

    B)                         10            

    C)                         5                     

    D)                         4

    Correct Answer: A

    Solution :

                    \[v=\sqrt{\mu \ g\ r}\Rightarrow r=\frac{{{v}^{2}}}{\mu g}=\frac{100}{0.5\times 10}=20\]            


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