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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 rad/s$^2$
(2) 16 rad/s$^2$
(3) 12 rad/s$^2$
(4) 10 rad/s$^2$
BETA
