a uniform disk has a moment of inertia that is (1/2)mr2. a uniform disk of mass 14 kg, thickness 0.3 m, and radius 0.3 m is located at the origin, oriented with its axis along the y axis. it rotates clockwise around its axis when viewed from above (that is, you stand at a point on the y axis and look toward the origin at the disk). the disk makes one complete rotation every 0.3 s. what is the rotational angular momentum of the disk?