The angular position of a rotating body is the angle the body has rotated through in a fixed coordinate system, which serves as a frame of reference. The angular velocity of a rotating body about a fi...The angular position of a rotating body is the angle the body has rotated through in a fixed coordinate system, which serves as a frame of reference. The angular velocity of a rotating body about a fixed axis is defined as ω(rad/s), the rotational rate of the body in radians per second. If the system’s angular velocity is not constant, then the system has an angular acceleration. The instantaneous angular acceleration is the time derivative of angular velocity.
