NEET Sample Paper NEET Sample Test Paper-21

  • question_answer
    Find the force needed to hold the wedge in equilibrium, if there is no friction

    A) \[\frac{mg}{\cos \theta }\]                  

    B) \[mg\,\sin \theta \]        

    C)    \[mg{{\sin }^{2}}\theta \]   

    D)   \[mg\cos \theta \sin \theta \] 

    Correct Answer: D

    Solution :

    For the block, \[N=mg\cos \theta \] For the horizontal equilibrium of the wedge, \[F=N\sin \theta \] \[\therefore \]\[F=mg\cos \theta \sin \theta \] Hence, the correction option is (d).

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