CMC Medical CMC-Medical Ludhiana Solved Paper-2007

  • question_answer
    If earth suddenly shrinks to half of its present radius, the acceleration due to gravity will be

    A)  4 g                                        

    B)  2 g

    C)  g/2                                       

    D)  g/4

    Correct Answer: A

    Solution :

                    Since \[g=\frac{GM}{{{R}^{2}}}\]                              ?(i) \[g=\frac{GM}{{{(R/2)}^{2}}}\]                  ?(ii) \[g=4\frac{GM}{{{R}^{2}}}\] \[g=4g\]          [From Eq. (i)]


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