J & K CET Engineering J and K - CET Engineering Solved Paper-2011

  • question_answer
    An orbiting satellite has

    A)  only kinetic energy

    B)  only potential energy

    C)  kinetic and potential energies

    D)  zero energy

    Correct Answer: C

    Solution :

    When a satellite revolves around a planet in its orbit, it possesses both potential energy and kinetic energy. Potential energy, \[U=-\frac{GMm}{r}\] and kinetic energy, \[K=\frac{GMm}{2r}\]


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