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NEET Sample Paper NEET Sample Test Paper-26

  • question_answer
    The pulleys and string shown in the figure are smooth and of negligible mass. For the system to be under equilibrium, the angle \[\theta \] should be:

    A)  \[{{0}^{o}}\]                      

    B)  \[{{30}^{o}}\]

    C)  \[{{45}^{o}}\]                    

    D)  \[{{60}^{o}}\]

    Correct Answer: D

    Solution :

    In equilibrium, For mass \[\sqrt{2}m,\,T\,\cos \theta +T\,\cos \theta =\sqrt{2}mg\]      ?.(i) And for mass m,      \[T=mg\] Putting the value of T = mg in equation (i) we get \[\Rightarrow \]               \[2T\,\cos \theta =2mg\,\cos \theta =\sqrt{2}mg\] \[\Rightarrow \]               \[\theta =\frac{\pi }{4}\]


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