A 16 kg block is attached to a cord that is wound around the rim of a flywheel of radius 0.20 m and hangs vertically, as shown in Fig. The rotational inertia of the flywheel is 0.50 kg m^2. When the block is released and the cord unwinds, the acceleration of the block is:
a) m/s^2 9.8
b) m/s^2 1.5
c) m/s^2 8.2