JEE Main & Advanced Physics Wave Mechanics Question Bank Self Evaluation Test - Oscillations

  • question_answer
    A body executes simple harmonic motion. The potential energy (P.E.), the kinetic energy (K.E.) and total energy (T.E.) are measured as a function of displacement x. Which of the following statement is true?

    A) P.E. is maximum when x = 0.

    B) K.E. is maximum when x = 0.

    C) T. E. is zero when x = 0.

    D) K.E. is maximum when x is maximum.

    Correct Answer: B

    Solution :

    [b] \[K=\frac{1}{2}m{{\omega }^{2}}({{A}^{2}}-{{x}^{2}})\,\therefore \,{{K}_{\max }}=\frac{1}{2}m{{\omega }^{2}}{{A}^{2}},\] at \[x=0\]


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