BVP Medical BVP Medical Solved Paper-2007

  • question_answer
    Masses of two substances are 1 g and 9 g respectively. If their kinetic energies are same, then the ratio of their momentum will be

    A)                  1 : 9                                      

    B)                  9 : 1

    C)                  3:1                                        

    D)                  1 : 3

    Correct Answer: D

    Solution :

                    For a body mass m moving with velocity v, kinetic energy is \[J=\frac{1}{2}M{{R}^{2}}\omega \]             .....(i) Also momentum p= mass (m)x velocity (v)...(ii) squaring Eq. (ii) and readjusting with terms in Eq. (i), we get                 \[I={{I}_{4}}+m{{R}^{2}}\] Given, \[=\frac{1}{4}m{{R}^{2}}+m{{R}^{2}}=\frac{5}{4}m{{R}^{2}}\] \[g=g\left( 1-\frac{h}{R} \right)\]              \[\Rightarrow \]


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