Question

A hole of radius r is cut from a uniform disc of radius 2r. Centre of hole is at a distance r from centre of the disc locate center of mass of the remaining part of the disc

Answer 1

From a uniform disk of radius R, a circular hole of radius R/2 is cut out. The centre of the hole is at R/2 from the centre of the original disc. Locate the centre of gravity of the resulting flat body.