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JIPMER Jipmer Medical Solved Paper-2009

  • question_answer
    A block B is pushed momentarily along a horizontal surface with an initial velocity v. If \[\mu \] is the coefficient of sliding friction between B and the surface, block B will come to rest after a time

    A)  \[\frac{v}{g\mu }\]                        

    B)         \[\frac{g\mu }{v}\]                        

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

    D)         \[\frac{v}{g}\]

    Correct Answer: A

    Solution :

    Block B will come to rest, if force applied to it will vanish due to frictional force acting between block B and surface, i.e., force applied = frictional force i.e.,                        \[\mu mg=ma\] or                            \[\mu mg=m\left( \frac{v}{t} \right)\] or                            \[t=\frac{v}{\mu g}\]


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