1. The problem statement, all variables and given/known data A yoyo of mass m= 2 kg and moment of inertia I_cm= 0.0625 kg m^2 consists of two solid disks of radius R=0.25 m, connected by a central spindle of radius r=0.1875 m and negligible mass. A light string is coiled around the central spindle. The yoyo is placed upright on a flat rough surface and the string is pulled with a horizontal force F= 22 N, and the yoyo rolls without slipping. (a) What is the x-component of the acceleration of the center of mass of the yoyo? (in m/s^2 ) (b)What is the x-component of the friction force? (in N) 2. Relevant equations F = ma, torque = I*alpha, a = R*alpha 3. The attempt at a solution I tried to solve the problem this way: Using F = ma, and the given, I had F - friction force = ma, with friction force = 22 - 2a. With torque = I*alpha, I got 0.25*friction force - 0.1875*22 = 0.0625*alpha. To put them all together, I got this equation, R(22-2a) - 0.1875*22 = (0.0625/0.25)*a And then plugging the given, I got a = 1.83 m/s^2, but I don't think I'm doing this correctly. Can someone please help me figure out where I went wrong right away. Thanks so much, sorry to be a bother here.