CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2011

  • question_answer
    A particle of mass m is moving in a horizontal circle of radius r, under a centripetal force\[F=\frac{k}{{{r}^{2}}},\] where k is a constant.

    A)  The potential energy of the particle is zero

    B)  The potential energy of the particle is \[\frac{k}{r}\]

    C)  The total energy of the particle is \[-\frac{k}{2r}\]

    D)  The kinetic energy of the particle is \[-\frac{k}{r}\]

    E)  The potential energy of the particle is \[-\frac{k}{2r}\]

    Correct Answer: A

    Solution :

    For horizontal planes potential energy remains constant equal to zero, if we assume surface to be the zero level.


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