Three blocks $A, B$ and $C,$ of masses $4\, kg, \,2 \,kg$ and $1\, kg$ respectively, are in contact on a frictionless surface, as shown. If a force of $14\, N$ is applied on the $4 \,kg$ block, then the contact force between $A$ and $B$ is  .......... $N$

534-87

  • [AIPMT 2015]
  • A

    $2$

  • B

    $6$

  • C

    $8$

  • D

    $18$

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