WB JEE Medical WB JEE Medical Solved Paper-2007

  • question_answer
    Two masses M and M/2 are joined together by means of light inextensible string passed over a frictionless pulley as shown in the figure. When the bigger mass is released, the small one will ascend with an acceleration of

    A)  \[\frac{g}{3}\]                                  

    B)  \[\frac{3g}{2}\]

    C)  \[\frac{g}{2}\]                                  

    D)  g

    Correct Answer: A

    Solution :

                     Acceleration, \[a=\frac{{{M}_{1}}-{{M}_{2}}}{{{M}_{1}}+{{M}_{2}}}g\] \[=\frac{M-\frac{M}{2}}{M+\frac{M}{2}}g=\frac{\frac{M}{2}}{\frac{3M}{2}}g=\frac{g}{3}\]


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