Pöörlemiskiire

Pöörlemiskiire, also known as angular velocity, is a measure of how quickly an object rotates or revolves around an axis. It quantifies the rate of change of angular displacement with respect to time. It is a vector quantity, meaning it has both magnitude and direction. The magnitude of pöörlemiskiire is typically expressed in units of radians per second (rad/s) or revolutions per minute (RPM).

The direction of the pöörlemiskiire vector is along the axis of rotation, following the right-hand rule. If you curl the fingers of your right hand in the direction of the object's rotation, your thumb points in the direction of the pöörlemiskiire vector. For example, a wheel spinning clockwise when viewed from the right will have a pöörlemiskiire vector pointing to the left.

Pöörlemiskiire is a fundamental concept in rotational motion and is analogous to linear velocity in translational motion. Just as linear velocity describes the rate of change of linear position, pöörlemiskiire describes the rate of change of angular position. It is crucial for understanding phenomena such as the motion of planets, the operation of engines, and the dynamics of spinning objects. The formula for average pöörlemiskiire is the change in angular displacement divided by the change in time. Instantaneous pöörlemiskiire is the limit of this ratio as the time interval approaches zero.