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BVP Medical BVP Medical Solved Paper-2012

  • question_answer
    A particle performs uniform circular motion with an angular momentum L. If the frequency of particle motion is doubled and its KE is halved, the angular momentum becomes

    A)  \[7m/s\]                                            

    B)  \[12m/s\]

    C)  \[\frac{2v(n-1)}{n}\]                                     

    D)  \[\frac{v(n-1)}{n}\]

    Correct Answer: D

    Solution :

                    \[\frac{R_{B}^{2}}{R_{A}^{2}}\]                 \[3m/{{s}^{2}}\]           ??(1) Also, kinetic energy \[-3m/{{s}^{2}}\] or            \[0.3m/{{s}^{2}}\]                                 \[-0.3m/{{s}^{2}}\] \[4:1\]   \[1:3\] Hence, \[3:1\]                                 \[1:9\] \[1:16\] \[6m/s\]


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