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NEET Sample Paper NEET Sample Test Paper-5

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

    A)  \[2\pi \sqrt{\frac{m}{2K}}\]                  

    B)  \[2\pi \sqrt{\frac{2m}{2K}}\]

    C)                  \[2\pi \sqrt{\frac{m\,\sin \theta }{2K}}\]                             

    D)  \[2\pi \sqrt{\frac{2m\,\sin \theta }{K}}\]

    Correct Answer: A

    Solution :

    For mass m \[Kx+Kx=ma\] \[2Kx=ma\] \[{{K}_{eff}}=2K\]             \[\therefore \]     \[T=2\pi \,\sqrt{\frac{m}{2K}}\]


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