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JEE Main & Advanced AIEEE Solved Paper-2002

  • question_answer
    The minimum velocity (in \[m{{s}^{-1}}\]) with which a car driver must traverse a flat curve of radius 150 m and coefficient of friction \[0.6\] to avoid skidding is   AIEEE  Solved  Paper-2002

    A) 60                              

    B)           30    

    C) 15                              

    D)           25

    Correct Answer: B

    Solution :

    To move a body on a circular path, centripetal force is necessary. In this question, there is an agent, friction that will provide the required centripetal force to the car.              Using the relation \[\frac{m{{v}^{2}}}{r}=\mu R,R=mg\]                                 \[\frac{m{{v}^{2}}}{r}=\mu mg\]              or                               \[{{v}^{2}}=\mu rg\]              or                               \[{{v}^{2}}=0.6\times 150\times 10\] or              \[v=30\,m/s\]


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