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JEE Main & Advanced Physics NLM, Friction, Circular Motion Question Bank Motion of Connected Bodies

  • question_answer
    A light string passing over a smooth light pulley connects two blocks of masses \[{{m}_{1}}\] and \[{{m}_{2}}\] (vertically). If the acceleration of the system is g/8 then the ratio of the masses is        [AIEEE 2002]

    A)             8 : 1

    B)               9 : 7

    C)             4 : 3    

    D)             5 : 3

    Correct Answer: B

    Solution :

                    \[a=\left( \frac{{{m}_{1}}-{{m}_{2}}}{{{m}_{1}}+{{m}_{2}}} \right)g\] Þ \[\frac{g}{8}=\left( \frac{{{m}_{1}}-{{m}_{2}}}{{{m}_{1}}+{{m}_{2}}} \right)g\] Þ \[\frac{{{m}_{1}}}{{{m}_{2}}}=\frac{9}{7}\]


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