Problem - 20P47 A yo-yo of mass M, moment of iner- tia I (about its symmetry axis), outer radius R, and spin- dle (inner) radius R/2 rests on a horizontal surface. Its string is pulled gently in the horizontal direction with tension T, as shown. Assuming sufficient static friction with the table so that the yo-yo rolls without slipping, find the yo-yo's (a) angular acceleration about its symmetry axis (b) center-of-mass acceleration relative to the surface