A string is wound around a hollow cylinder of mass 5 kg and radius 0.5 m. If the string is now pulled with a horizontal force of 40 N, and the cylinder is rolling without slipping on a horizontal surface (see figure), then the angular acceleration of the cylinder will be (Neglect the mass and thickness of the string) (1) $20 \mathrm { rad } / \mathrm { s } ^ { 2 }$ (2) $16 \mathrm { rad } / \mathrm { s } ^ { 2 }$ (3) $12 \mathrm { rad } / \mathrm { s } ^ { 2 }$ (4) $10 \mathrm { rad } / \mathrm { s } ^ { 2 }$
A string is wound around a hollow cylinder of mass 5 kg and radius 0.5 m. If the string is now pulled with a horizontal force of 40 N, and the cylinder is rolling without slipping on a horizontal surface (see figure), then the angular acceleration of the cylinder will be (Neglect the mass and thickness of the string)\\
(1) $20 \mathrm { rad } / \mathrm { s } ^ { 2 }$\\
(2) $16 \mathrm { rad } / \mathrm { s } ^ { 2 }$\\
(3) $12 \mathrm { rad } / \mathrm { s } ^ { 2 }$\\
(4) $10 \mathrm { rad } / \mathrm { s } ^ { 2 }$