$A$ rope is wound around a solid cylinder of mass $1 \,kg$ and radius $0.4 \,m$. What is the angular acceleration of the cylinder, if the rope is pulled with a force of $25 \,N$? (The cylinder is rotating about its own axis.)

  • A
    $50 \,rad/s^2$
  • B
    $125 \,rad/s^2$
  • C
    $10 \,rad/s^2$
  • D
    $1 \,rad/s^2$

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