JEE Main & Advanced JEE Main Paper (Held On 9 April 2016)

  • question_answer
    A rocket is fired vertically from the earth with an acceleration of 2g, where g is the gravitational acceleration. On an inclined plane inside the rocket, making an angle \[\theta \]. With the horizontal , a point object of mass m is kept. The minimum coefficient of friction \[{{\mu }_{\min }}\] between the mass and the inclined surface such that he mass does not move is :   JEE Main Online Paper (Held On 09 April 2016)

    A) \[\tan \theta \]                                

    B) \[\tan 2\theta \]                

    C) \[3\tan \theta \]                                              

    D) \[2\tan \theta \]              

    Correct Answer: A

    Solution :

                    \[{{g}_{eft}}=3g\,\text{but}\,{{\mu }_{\min }}|=\tan \theta \]                


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