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AFMC AFMC Solved Paper-2010

  • question_answer
    At what angle should the two forces 2P and \[\sqrt{2}P\] act so that the resultant force is? \[P\sqrt{10}\]

    A) \[45{}^\circ \]                                     

    B) \[60{}^\circ \]

    C) \[90{}^\circ \]

    D) \[120{}^\circ \]

    Correct Answer: A

    Solution :

    Resultant, \[R=\sqrt{{{A}^{2}}+{{B}^{2}}+2AB\cos \theta }\] \[P\sqrt{10}=\sqrt{4{{P}^{2}}+2{{P}^{2}}+4\sqrt{2}{{P}^{2}}\cos \theta }\] \[\therefore \]    \[\theta ={{45}^{o}}\]


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