instantaneous axis of rotation

At the poles these variations in the Earth's instantaneous axis of rotation are less than 27 cm.

During purely rotational motion, all points on the body change position except for those lying on the instantaneous axis of rotation.

Two points of a rotating body will have the same instantaneous velocity only if they happen to lie on an axis parallel to the instantaneous axis of rotation.

If the reference point is the "Instantaneous axis of rotation" the expression of velocity of a point in the rigid body will have just the angular velocity term.

The inferior compartment allows for rotation of the condylar head around an instantaneous axis of rotation, corresponding to the first 20mm or so of the opening of the mouth.

In any single plane, the path formed by the locations of the moving instantaneous axis of rotation (IAR) is known as the 'centroid', and is used in the description of joint motion.

This equation has the limitation that the torque equation describes the instantaneous axis of rotation or center of mass for any type of motion - whether pure translation, pure rotation, or mixed motion.