RAJASTHAN ­ PET Rajasthan PET Solved Paper-2004

  • question_answer
    Two springs of force constants k and 2k are connected to a mass M as shown below. The time period of oscillation of the mass M is

    A)   \[2\pi \sqrt{\frac{3k}{M}}\]

    B)  \[2\pi \sqrt{\frac{k}{M}}\]

    C)  \[2\pi \sqrt{\frac{M}{2k}}\]

    D)  \[2\pi \sqrt{\frac{M}{3k}}\]

    Correct Answer: D

    Solution :

     Effective force constant of combination \[=k+2k\] \[=3k\] \[T=2\pi \sqrt{\frac{M}{3k}}\]


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