Calculate the acceleration (In $m/s^{2}$) of the block and trolly system shown in the figure. The coefficient of kinetic friction between the trolly and the surface is $0.05 .\left( g =10\; m / s ^{2},\right.$ mass of the string is negligible and no other friction exists).

981-331

  • [NEET 2020]
  • A

    $1$

  • B

    $1.25$

  • C

    $1.5$

  • D

    $1.66$

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  • [AIEEE 2012]