The formulas to calculate the angular acceleration are:
\[ \alpha = \frac{\omega_2 - \omega_1}{t} \]
or
\[ \alpha = \frac{a}{R} \]
Where:
Angular acceleration is the rate of change of angular velocity in an object that is undergoing circular motion. It can be calculated from the change in angular velocity over time or from the tangential acceleration and radius of rotation.
Let's assume the following values:
Using the formula to calculate the angular acceleration:
\[ \alpha = \frac{20 - 10}{5} = 2 \text{ rad/s²} \]
The angular acceleration is 2 rad/s².