Physics
posted by Roxy .
A large disk of mass M and radius R is spinning like a CD of merrygoround  that is, about an axis perpendicular to the plane of the disk. It is rotating at an angular velocity ? (initial). At some instant, a sphere of mass M/4 , which is initially not rotating, is dropped onto the disk at a distance of 3R/ 4 from the center. The sphere sticks to the disk and begins rotating with it. Find the final velocity of the disksphere combination.
^^^ the ? mark is the lowercase "omega"
Add the two I, using the parallel axis theorem.
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