Applied Physics and Mathematics Annotation << Back THE GYROSCOPE WITH TWO DEGREE OF FREEDOM. ONCE MORE ABOUT THE PRINCIPLE OF ACTION V.V. FATEEV, A.V. KULESHOV The paper presents an approach to the formulation of the physical principles of the behavior of gyroscope with two degree of freedom. It is based on a representation of the gyroscope with two degree of freedom by using a physical model of gyroscope with three degree of freedom with some features, which determined by size and weight of the outer frame. It is allowed to present a physical model of the behavior of gyroscope with two degree of freedom without using of the concept of inertial (non-physical) forces (moments) taking into account the properties of gyroscope with three degree of freedom. Keywords: gyroscope with two degree of freedom, principle of action, gyroscope with three degree of freedom, precession, physical moment. Contacts: E-mail: akul1974@mail.ru Pp. 24-29.