A wheel of radius 0.20 m is mounted on a frictionless horizontal axis. A massless cord wrapped around the wheel is attaches to a 2.0 kg block that slides on a horizontal frictionless surface. If a horizontal force of magnitude P= 5.0 N is applied to the block as shown and the resulting acceleration of the block is measured to be 0.75m/s^2, what is the rotational inertia of the wheel?