Radian Per Second Squared

High Quality Content by WIKIPEDIA articles! The radian per second squared (symbol: rad/s²) is the SI unit of angular acceleration. It is defined as the increase in the change in orientation in radians of an object per second per second; in other words, the increase in angular velocity (measured in radians per second) per second. Angular acceleration is the rate of change of angular velocity over time. In SI units, it is measured in radians per second squared (rad/s2), and is usually denoted by the Greek letter alpha (α). For any non-constant torque, the angular acceleration of an object will change with time. The equation becomes a differential equation instead of a constant value. This differential equation is known as the equation of motion of the system and can completely describe the motion of the object. It is also the best way to calculate the angular velocity.