Question

Starting from rest,the fly wheel of a motor attains an angular velocity 100 rad/s from in 10S.Calculate angular acceleration.

Answer 1

$\omega_o = 0\\ \omega = 100\ rad/s\\t=10s\\ \alpha=\ ? \\ \\ \alpha= \frac{\omega-\omega_o}{t} =\frac{100-0}{10} =\boxed{10\ rad/s^2}$

Angular acceleration is 10 rad/s²