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NEET Sample Paper NEET Sample Test Paper-74

  • question_answer
    If a block of mass M is lying on a frictionless surface and an another block of mass m is lying on this block as shown in figure. If the coefficient of static friction between two blocks is \[\mu \] then the minimum horizontal force F that must be applied to block of mass m so that it moves over block of mass M is

    A)  \[\frac{mg}{\mu }\]                              

    B)  mg

    C)  \[\mu mg\]                   

    D)  \[\mu Mg\]

    Correct Answer: C

    Solution :

    The block of mass m will move over block of mass M, if the force F applied to m exceeds the force of static friction \[{{f}_{s}}\] between the two blocks. Minimum force \[F ={{f}_{s}}\] \[=\,\,\mu \,\,mg\]


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