A flat, circular metal disk of uniform thickness has a radius of 3.0 cm. A hole is drilled in the disk that is 1.5 cm in radius. The hole is tangent to one side of the disk. Where is the cm of the disk now that the hole has been drilled? [The original disk (before the hole is drilled) can be thought of as having two pieces-the disk with the hole plus the smaller disk of metal drilled out. Write an equation that expresses xCM of the original disk in terms of the xCM's of the two pieces. Since the thickness is uniform, the mass of any piece is proportional to its area.]

Transcribed Image Text:

y (cm) -3 0 3 x (cm) 3 -3.0 cm