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JEE Main & Advanced Physics NLM, Friction, Circular Motion Question Bank Static and Limiting Friction

  • question_answer
    A horizontal force of 10 N is necessary to just hold a block stationary against a wall. The coefficient of friction between the block and the wall is 0.2.  the weight of the block is         [AIEEE 2003]

    A)             2 N

    B)               20 N

    C)             50 N   

    D)             100 N

    Correct Answer: A

    Solution :

                    \[F=\frac{W}{\mu }\]  \[\therefore \]\[W=\mu F=0.2\times 10=2N\]


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