$A$ block of mass $m$ is placed on a smooth fixed inclined plane with an angle of inclination of $37^{\circ}$. $A$ horizontal force $F$ is applied to keep the block at rest. Find the value of $F$.

  • A
    $\frac{mg}{4}$
  • B
    $\frac{3 mg}{4}$
  • C
    $\frac{mg}{5}$
  • D
    $\frac{2 m g}{5}$

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