The set of books on Non-deformable Solid Mechanics, of which this book is the fourth volume, is an essential tool for those looking to develop a rigorous knowledge of the discipline, whether students, professionals (in search of an approach to a problem they are dealing with), or anyone else interested.

This volume builds on the topics of the previous books in that it applies the principles established in the third volume which led to the movement equations.

Through an examination of the scalar consequences of the fundamental principle of dynamics, this book identifies the conceivable situations of equilibrium, the conditions for obtaining them and the values of the situation parameters which correspond with them. A special emphasis is placed on the behavior of oscillatory components and their influence on stabilized and stabilizer systems.

This book includes a chapter devoted to the formal mathematics of such systems and another to the stabilizer effects of a common device of coupled components: the gyroscope. It goes through the common applications of this device, including the case of the gyroscopic pendulum, chiefly used for controlling satellites, and the gyro-compass as a navigational instrument which helps maintain true north.