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JEE Main & Advanced Physics Simple Harmonic Motion Question Bank Time Period and Frequency

  • question_answer
    A tunnel has been dug through the centre of the earth and a ball is released in it. It will reach the other end of the tunnel after

    A)            84.6 minutes

    B)            42.3 minutes

    C)            1 day                                       

    D)            Will not reach the other end

    Correct Answer: B

    Solution :

               Ball execute S.H.M. inside the tunnel with time period \[T=2\pi \sqrt{\frac{R}{g}}=84.63\ \min \] Hence time to reach the ball from one end to the other end of the tunnel \[t=\frac{84.63}{2}=42.3\ \min .\]


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