A heavy body of mass $25\, kg$ is to be dragged along a horizontal plane $\left( {\mu  = \frac{1}{{\sqrt 3 }}} \right).$ The least force required is ........ $kgf$ 

  • A

    $25$

  • B

    $2.5$

  • C

    $12.5$

  • D

    $6.25$

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