1. The problem statement, all variables and given/known data A disk rotates with constant angular acceleration. The initial angular speed of the disk is 2π rad/s. After the disk rotates through 1π radians, the angular speed is 14π rad/s. What is the magnitude of the angular acceleration? 2. Relevant equations w=w0+at 3. The attempt at a solution I tried to use w=w0+at but that didn't work. What equation do I need to use?