Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2007

  • question_answer
    On a smooth inclined plane, a body of mass M b attached between two springs. The other ends of the springs are fixed to firm supports. If each spring has force constant k, the period of oscillation of the body (assuming the springs as massless) is

    A) \[2\pi {{\left( \frac{M}{2k} \right)}^{1/2}}\]                        

    B) \[2\pi {{\left( \frac{2M}{k} \right)}^{1/2}}\]

    C) \[2\pi \frac{Mg\,\sin \,\text{ }\!\!\theta\!\!\text{ }}{2k}\]                           

    D) \[2\pi {{\left( \frac{2Mg}{k} \right)}^{1/2}}\]

    Correct Answer: A

    Solution :

    Time period, \[T=2\pi \sqrt{\frac{M}{k+k}}\] \[=2\pi \sqrt{\frac{M}{2k}}\]


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