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JEE Main & Advanced Physics Gravitation / गुरुत्वाकर्षण Question Bank Gravitation Potential

  • question_answer
    The kinetic energy needed to project a body of mass m from the earth surface (radius R) to infinity is [AIEEE 2002]

    A) mgR/2

    B)               2 mgR

    C)             mgR    

    D)             mgR/4

    Correct Answer: C

    Solution :

                    \[\frac{1}{2}mv_{e}^{2}=\frac{1}{2}m\,\,2gR=mgR\]


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