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AIIMS AIIMS Solved Paper-2011

  • question_answer
    A 60 kg weight is dragged on a horizontal surface by a rope through a distance of 2m. If coefficient of friction is \[\mu =0.5,\] the angle of rope with surface is 60° and \[g=9.8\,m/{{s}^{2}},\] then work done is

    A)  294 J                                    

    B)  15 J                       

    C)         588 J                    

    D)         197 J

    Correct Answer: A

    Solution :

    \[=3.125\times {{10}^{16}}\] \[E=IR\] \[I=\frac{E}{R}\] \[E=\frac{d\phi }{dt}\]                  \[\therefore \] \[I=\frac{d\phi }{dt\,R}\]          \[q=I.dt\]


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