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

  • question_answer
    A uniform chain of length L changes partly from a table which is kept in equilibrium by friction. The maximum length that can withstand without slipping is l, then coefficient of friction between the table and the chain is                                                             [EAMCET (Engg.) 1995]            

    A)                              \[\frac{l}{L}\]             

    B)                         \[\frac{l}{L+l}\]            

    C)                         \[\frac{l}{L-l}\]            

    D)                         \[\frac{L}{L+l}\]

    Correct Answer: C

    Solution :

                                \[\mu =\frac{\text{Lenght of chain hanging from the table}}{\text{Lenght of chain lying on the table}}\]\[=\frac{l}{L-l}\]                              


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