# What is rotational dynamics?

Sep 22, 2015

Rotational dynamics is the study of forces and motions about an axis of rotation.

#### Explanation:

Rotational dynamics is the study of forces and motions about an axis of rotation.

Formulas such as Kinematic Equations and Newton's laws can be expressed in rotating coordinate frames such as:

Newton's 2nd Law ${F}_{\text{net}} = m$ x $a$ translates into Torque =$I$ x $\alpha$ Where $I$ is Moment of Inertia (the rotational analogous term to mass)
and $\alpha$ is angular acceleration