• # 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 ONLINE 09-04-2016] A) $\tan \theta$ B) $\tan 2\theta$ C) $3\tan \theta$ D) $2\tan \theta$

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