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JEE Main & Advanced Physics Gravitation / गुरुत्वाकर्षण Question Bank Motion of Satellite

  • question_answer
    A geostationary satellite is revolving around the earth. To make it escape from gravitational field of earth, is velocity must be increased                          [J&K CET 2005]

    A) 100%  

    B)             41.4%

    C)             50%    

    D)             59.6%

    Correct Answer: B

    Solution :

                    \[{{v}_{e}}=\sqrt{2}{{v}_{0}}=1.414\ {{v}_{0}}\] Fractional increase in orbital velocity\[\left( \frac{\Delta v}{v} \right)\]                                     \[=\frac{{{v}_{e}}-{{v}_{0}}}{{{v}_{0}}}=0.414\] Percentage increase = 41.4%


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