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Haryana PMT Haryana PMT Solved Paper-2000

  • question_answer
    A force \[(3\hat{i}+2\hat{j})N\] displaces an object through a distance \[(2\hat{i}+3\hat{j})M\]The work done is:

    A) \[\text{13}\,\text{J}\]                                   

    B) \[15\,\text{J}\]

    C) \[5\,\text{J}\]                                   

    D)  \[0\,\text{J}\]

    Correct Answer: D

    Solution :

                    Using the relation, \[W=F.s=(3\hat{i}+2\hat{j}):(2\hat{i}-3\hat{j})\] \[=3\times 2+2\times -3\] \[=6-6=0\]


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