Problem 5. given:g=9.81m/s^2. A light string 1.20 m long is wrapped around a solid cylindrical spool with a redius of 0.0195 m and a mass of 0.380 kg. A 8.40 kg mass is then attached to the free end of the string, causing the string to unwind from the spool. a. What is the angular acceleration of the spool? Answer in rad/s^2. Note : I worked on the problem and I got 22241.14162 by using the formula (moment of inertia* angular acceleration= mass*g*radius. However my answer was wrong what did I do wrong?