This third volume covers kinetics, strength theory, and hydromechanics, thus providing a comprehensive overview of mechanics for the electrical engineering student. Numerous examples will facilitate understanding, and practical exercises will ensure and deepen the application of what has been learned. I would like to express my gratitude to my colleagues DI E. Glauninger and DI J. Sieghart for allowing me to use excerpts and images from their books 'Technical Mechanics' Parts 1 to 3. I received special assistance in reviewing the text and the exercises from my student J. Schnabler, for which I am sincerely thankful. I appreciate the colleagues and students who pointed out errors and provided feedback for the further development of the book. Linz, Winter 1991 Hans G. Steger Image Sources List Holzmann, Meyer, Schumpich, Technical Mechanics (B. G. Teubner, Stuttgart): Image 1. 13, 1. 44, 1. 63 Menny, Flow Machines (B. G. Teubner, Stuttgart): Image 3. 78 All other images are from the image archive B. G. Teubner, Stuttgart. Table of Contents Page 1 Kinetics 1. 1 Fundamental Law of Dynamics, d'Alembert's Principle 7 1. 2 Rotation about a Fixed Axis 13 1. 2. 1 Fundamental Law for Rotational Motion 13 1. 2. 2 Moment of Inertia 14 Exercises for Sections 1. 1 and 1. 2 19 1. 3 Potential and Kinetic Energy 20 1. 4 Work and Energy Conservation Principle 22 Exercises for Sections 1. 3 and 1. 4 26 1. 5 Momentum (Motion Quantity) and Momentum Principle 26 1. 6 Angular Momentum (Impulse Moment) and Angular Momentum Principle 28 Exercises for Sections 1. 5 and 1. 6 30 31 1.