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

  • question_answer
    The blocks A and B are arranged as shown in the figure. The pulley is frictionless. The mass of A is 10 kg. The coefficient of friction of A with the horizontal surface is 0.20. The minimum mass of B to start the motion will be [MP PET 1994]                        

    A)                         2 kg            

    B)                         0.2 kg            

    C)                         5 kg            

    D)                         10 kg

    Correct Answer: A

    Solution :

                                \[\mu =\frac{{{m}_{B}}}{{{m}_{A}}}\ \ \Rightarrow \ 0.2=\frac{{{m}_{B}}}{10}\ \ \Rightarrow \ {{m}_{B}}=2kg\]            


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