Question

Angular Quantities: When a fan is turned off, its angular speed decreases from 10 rad/s to 6.3 rad/s in 5.0 s. What is the magnitude of the average angular acceleration of the fan

Answer 1

angular acceleration = change in angular speed / change in time

angular acceleration = 10 rad/s - 6.3 rad/s / 5s

angular acceleration = 3.7 rad/s / 5s

angular acceleration = 0.74 rad/s^2