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MGIMS WARDHA MGIMS WARDHA Solved Paper-2007

  • question_answer
    In a carnival ride the passengers travel in a circle of radius 5.0 m, making one complete circle in 4.0 s. What is the acceleration?

    A) 24.6 m/s2                            

    B) 12.3 m/s2

    C) 6.15 m/s2                            

    D) 49.2 m/s2

    Correct Answer: B

    Solution :

    Circumference of the circle\[=2\pi r\] \[=2\times 3.14\times 5\] \[=31.4m\] Velocity,\[v=\frac{31.4}{4}=7.85\text{ }m/s\] Acceleration, \[a=\frac{{{v}^{2}}}{r}=\frac{7.85\times 7.85}{5}\]                 \[\approx 12.3\,m/{{s}^{2}}\]


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