NEET Physics Simple Harmonic Motion NEET PYQ-Simple Harmonic Motion

  • question_answer
    Which one of the following equations of motion represents simple harmonic motion?                [AIPMT (S) 2009]

    A)  Acceleration \[=-{{k}_{0}}x+{{k}_{1}}{{x}^{2}}\]

    B)  Acceleration \[=-\,k\,(x+a)\]

    C)  Acceleration \[=\,k\,(x+a)\]

    D)  Acceleration \[=kx\] where \[k,\,{{k}_{0}},\,{{k}_{1}}\] and a are all positive.

    Correct Answer: B

    Solution :

    Key Idea Acceleration \[\propto -\](displacement).
    \[A\,\propto -y\]
    \[A=-{{\omega }^{2}}y\]
    \[A=-\frac{k}{m}y\]
    \[A=-ky\]
    Here,     \[y=x+a\]
    \[\therefore \] acceleration \[=-k(x+a)\]


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