RAJASTHAN PMT Rajasthan - PMT Solved Paper-1996

  • question_answer
    A clock P is based on a simple pendulum and another clock S is based on spring oscillations. Both the clocks run with the same speed on earth. On a planet having density same as earth but twice the radius:

    A)  S will move faster than P

    B)         P will move faster than P

    C)         their speeds are same as that on earth

    D)         their speeds are same but different that on earth

    Correct Answer: A

    Solution :

    \[{{T}_{s}}=2\pi \sqrt{\frac{m}{k}},\,\,{{T}_{P}}=2\pi \sqrt{\frac{l}{g}}\] As planet \[{{T}_{P}}\] will become less because g will increase.                                   \[\therefore \] Clock S will move faster than P.            


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