What is rotational acceleration?

Rotational acceleration, also known as angular acceleration, refers to the rate at which an object's angular velocity changes over time. It is a vector quantity, typically expressed in radians per second squared (rad/s²). Rotational acceleration occurs when an object is subjected to a torque, causing it to speed up, slow down, or change direction in its rotational motion. It plays a crucial role in dynamics, particularly in systems involving circular motion.