A block of mass $M$ is pulled along a horizontal frictionless surface by a rope of mass $M / 2$. If a force $2 Mg$ is applied at one end of the rope, the force which the rope exerts on the block is -

  • A

    $\frac{2 Mg}{3}$

  • B

    $2 Mg$

  • C

    $\frac{4 Mg}{3}$

  • D

    $0$

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  • [JEE MAIN 2024]

Write day to day life example in which motion is controlled.