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J & K CET Engineering J and K - CET Engineering Solved Paper-2010

  • question_answer
    An object placed on an inclined plane starts sliding when the angle of incline becomes\[{{30}^{o}}\]. The coefficient of static friction between the object and the plane is

    A)  \[\frac{1}{\sqrt{3}}\]

    B)  \[\sqrt{3}\]

    C)  \[\frac{1}{2}\]

    D)  \[\frac{\sqrt{3}}{2}\]

    Correct Answer: A

    Solution :

    Coefficient of static friction \[{{\mu }_{S}}=\tan \theta =\tan \,({{30}^{o}})=\frac{1}{\sqrt{3}}\]


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