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  3. RAJASTHAN ­ PET

RAJASTHAN ­ PET Rajasthan PET Solved Paper-2007

  • question_answer
    The coefficient of friction between the tyres and the road is 0.25. The maximum speed with which car can be driven round a curve of radius 40 m without skidding is (assume \[g=10m/{{s}^{2}}\])

    A)  40 m/s           

    B)  20 m/s

    C)  15 m/s           

    D)  10 m/s

    Correct Answer: D

    Solution :

     \[{{v}_{\max }}=\sqrt{\mu gr}\] \[=\sqrt{0.25\times 10\times 40}=10\,m/s\]


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