JEE Main & Advanced JEE Main Solved Paper-2015

  • question_answer
    For a simple pendulum, a graph is plotted between its kinetic energy (KE) and potential energy (PE) against its displacement d. Which one of the following represents these correctly? (graph are schematic and not drawn to scale) [JEE Main Solved Paper-2015 ]

    A)                                                

    B)

    C)                                                

    D)

    Correct Answer: D

    Solution :

                                    \[V=\omega \sqrt{{{A}^{2}}-{{d}^{2}}}\] Kinetic energy \[=\frac{1}{2}{{\omega }^{2}}m\left( {{A}^{2}}-{{d}^{2}} \right)\] \[E=a=b{{d}^{2}}\]parabola


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