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JCECE Engineering JCECE Engineering Solved Paper-2015

  • question_answer
    Consider a track having frictional coefficient\[\mu \]. A block of mass \[m\] is released from point\[P\]  situated at height\[h\]. Which of the following is correct?

    A)  It can reach at\[V\]

    B)  It cannot reach at\[V\]

    C)  It can reach at\[V\], if \[\mu \] is reduced to\[\mu /2\]

    D)  It can reach at\[V\], if \[\mu \] is increased to\[2\mu \]

    Correct Answer: B

    Solution :

    The block can reach at \[V\]only when there is no loss in kinetic energy. In this case, due to presence of friction dissipation of energy will take place. Thus, the particle cannot reach at\[V\].


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