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JIPMER Jipmer Medical Solved Paper-2003

  • question_answer
                                                    A body is moving in a circular path with acceleration a. If its velocity gets doubled, find the ratio of acceleration after and before the change:

    A)  1 : 4                      

    B)         \[\frac{1}{4}:1\]                              

    C)  2 : 1                      

    D)         4 : 1

    Correct Answer: D

    Solution :

    In a circular motion \[a=\frac{{{\upsilon }^{2}}}{r}\] \[\therefore \]  \[\frac{{{a}_{2}}}{{{a}_{1}}}={{\left( \frac{{{\upsilon }_{2}}}{{{\upsilon }_{1}}} \right)}^{2}}={{\left( \frac{2{{\upsilon }_{1}}}{{{\upsilon }_{1}}} \right)}^{2}}=4\] \[\Rightarrow \]               \[{{a}_{2}}:a{{ & }_{1}}=4:1\]


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