1. A computer hard disk starts from rest, then speeds up with angular acceleration of 218 rad/s^2 until it reaches its final angular speed of 6660rpm. How many revolutions has the disk made 10.1s after it starts up? 3. The attempt at a solution. I have no idea how to find the number of revolutions in the time given with what appers to be a changing acceleration rate. I am unsure what is going on or how to solve this problem. Please help!