Punjab Medical Punjab - MET Solved Paper-2005

  • question_answer
    A ball of mass \[m\] moves with speed \[v\] and strikes a wall having infinite mass and it returns with same speed then the work done by the ball on the wall is

    A) \[zero\]                                               

    B) \[mv\mathbf{J}\]

    C) \[m/v\mathbf{J}\]                         

    D) \[v/m\mathbf{J}\]

    Correct Answer: A

    Solution :

    Work done = force \[\times \] displacement There is no displacement produced in the wall, so work done by ball is zero.


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