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JEE Main & Advanced Physics Rotational Motion Question Bank Self Evaluation Test - System of Particles Rotational Motion

  • question_answer
    The least coefficient of friction for an inclined plane inclined at angle a with horizontal in order that a solid cylinder will roll down without slipping is

    A) \[\frac{2}{3}\tan \alpha \]

    B) \[\frac{2}{7}\tan \alpha \]

    C) \[\tan \alpha \] 

    D) \[\frac{5}{7}\tan \alpha \]

    Correct Answer: C

    Solution :

    [c] \[\mu =\frac{F}{R}=\frac{mg\,\sin \,\alpha }{mg\,\cos \,\alpha }=\tan \,\alpha \]


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