A wooden wedge of mass $M$ and inclination angle $(\alpha)$ rest on a smooth floor. A block of mass $m$ is kept on wedge. A force $F$ is applied on the wedge as shown in the figure such that block remains stationary with respect to wedge. So, magnitude of force $F$ is

981-341

  • [AIIMS 2018]
  • A

    $(M+m) g \tan \alpha$

  • B

    $g \tan \alpha$

  • C

    $m g \cos \alpha$

  • D

    $(M+m) g \operatorname{cosec} \alpha$

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  • [JEE MAIN 2021]

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