2. Questions Bank
  3. JEE Main & Advanced
  4. Physics
  5. NLM, Friction, Circular Motion

JEE Main & Advanced Physics NLM, Friction, Circular Motion Question Bank Motion on Inclined Surface

  • question_answer
    A body takes just twice the time as long to slide down a plane inclined at 30o to the horizontal as if the plane were frictionless.  The coefficient of friction between the body and the plane is                               [JIPMER 1999]

    A)             \[\frac{\sqrt{3}}{4}\]            

    B)             \[\sqrt{3}\]

    C)             \[\frac{4}{3}\]

    D)             \[\frac{3}{4}\]

    Correct Answer: A

    Solution :

                    \[\mu =\tan \theta \left( 1-\frac{1}{{{n}^{2}}} \right)=\tan 30\left( 1-\frac{1}{{{2}^{2}}} \right)=\frac{\sqrt{3}}{4}\]


You need to login to perform this action.
You will be redirected in 3 sec spinner