Demonstration of complex rotational motion of a rigid body

Taking a “rotating tube” as a starting point to demonstrate a rigid body motion peculiarities, several advanced options of such a things are offered to visualize the corresponding concepts in kinematics, with the instantaneous axis of rotation having a special priority. The significant difference in behavior of the devices under consideration from other nonlinear systems concerns the time needed for the achievement of stationary phases. The corresponding time intervals are found to be finite, as opposed to exponential ones widely spread in nonlinear processes – due to dry friction.