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

  • question_answer
    The maximum speed of a car on a road turn of radius 30m; if the coefficient of friction between the tyres and the road is 0.4; will be                               [MH CET (Med.) 1999]

    A)             9.84 m/s         

    B)               10.84 m/s

    C)             7.84 m/s         

    D)             5.84 m/s

    Correct Answer: B

    Solution :

                    \[v=\sqrt{\mu rg}=\sqrt{0.4\times 30\times 9.8}=10.84\ m/s\]


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