Angular acceleration (α) is equal to torque (τ) divided by moment of inertia (I).

Here's the breakdown:

* Angular acceleration (α): This measures how quickly an object's angular velocity is changing. It's the rotational equivalent of linear acceleration.

* Torque (τ): This is a twisting force that causes an object to rotate. It's the rotational equivalent of force.

* Moment of inertia (I): This is a measure of an object's resistance to changes in its rotation. It's the rotational equivalent of mass.

The equation that describes this relationship is:

α = τ / I

Think of it like this:

* A larger torque will result in a larger angular acceleration.

* A larger moment of inertia will result in a smaller angular acceleration.

This equation is fundamental to understanding the rotational motion of objects. It's used in a wide range of applications, from designing engines to analyzing the motion of planets.