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JCECE Engineering JCECE Engineering Solved Paper-2011

  • question_answer
    A man slides down a light rope whose breaking strength is \[\eta \] times his weight. What should be his maximum acceleration so that the rope just not breaks?

    A) \[g(1-\eta )\]                    

    B) \[\eta g\]

    C)  \[\frac{g}{1+\eta }\]                     

    D)  \[\frac{g}{1-\eta }\]

    Correct Answer: A

    Solution :

    \[mg-R=ma\]                 \[mg-\eta mg=ma\]        \[[\because \,\,R=\eta \,\,mg]\]                 \[mg(1-\eta )=ma\]                 \[a=g(1-\eta )\]


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