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Manipal Medical Manipal Medical Solved Paper-2003

  • question_answer
    A sphere is accelerated upwards by a cord whose braking strength is four times its weight. The maximum acceleration with which the sphere can move up without breaking the cord is:

    A)  \[g\]

    B)  \[3g\]

    C)  \[2g\]

    D)  \[4g\]

    Correct Answer: B

    Solution :

     Here the tension in the cord is given by \[T=mg+ma\] (Here: upwards acceleration\[=a,\] mass of sphere\[=m,\text{ }T=4\text{ }mg\]) So,        \[4mg=mg+ma\] \[3mg=ma\] \[g=\frac{a}{3}\] or            \[a=3g\]


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