The radius of the pulley in figures (a) and (b) is 0.2m. If the mass moment of inertia of the pulley is 0.5kg*m, determine the angular acceleration of the pulley in figure (a). In figure (b), if the cord is pulled down 5m, determine the angular speed and kinetic energy of the pulley. In figure (c), if the cord is pulled down 5m, determine the angular speed and kinetic energy of the pulley.
F = 98N