1. The problem statement, all variables and given/known data A tire placed on a balancing machine in a service station starts from rest and turns through 4.9 revolutions in 1.0 s before reaching its final angular speed. Calculate its angular acceleration. I need my answer in rad/s^2 2. Relevant equations a=w/t 1rev= 2n rad 3. The attempt at a solution Converted rev/s to rad/s 4.9rev/s * (2n rad/s)/ 1 rev= 30.7876 rad/s a=w/t a= (30.7876 rad/s)/ 1sec => 30.7876 rad/s^2 This answer comes out wrong. What am I doing wrong?