The force required just to move a body up an inclined plane is double the force required just to prevent the body from sliding down. If $\mu $ is the coefficient of friction, the inclination of plane to the horizontal is

  • A

    $\theta \, = \,{\tan ^{ - 1}}\,(3\mu )$

  • B

    $\theta \, = \,{\tan ^{ - 1}}\,(2\mu )$

  • C

    $\theta \, = \,{\tan ^{ - 1}}\,(4\mu )$

  • D

    $\theta \, = \,{\tan ^{ - 1}}\,(\mu )$

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