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  3. BCECE Medical

BCECE Medical BCECE Medical Solved Papers-2006

  • question_answer
    A body is initially at rest. It undergoes one-dimensional motion with constant acceleration. The power delivered to it at time t is proportional to:

    A)  \[{{t}^{1/2}}\]

    B)  t

    C)  \[{{t}^{3/2}}\]

    D)  \[{{t}^{2}}\]

    Correct Answer: B

    Solution :

    Power delivered to the body                 \[P=Fv\]                                 \[=mav\]                                 \[=ma\,(0+gt)\] \[(\because \,\,u=0)\]                                 \[=\,\,magt\] or \[p\propto t\]


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