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- Title
Tensor de inercia de massa de um corpo rígido: teoría e práctica.
- Authors
Nubar Sismanoglu, Bogos; Barbosa de Barros Aragão, Eduardo Cezar; Bedik Sismanoglu, Bogos
- Abstract
In the study of both rotation and translation movement of the rigid body, the laws of conservation of mechanical energy, linear moment and angular moment are usually associated with an important quantity called mass moment of inertia. The moment of mass inertia is related to the inertia to the rotation of the body and calculated for the case in which the body rotates around a predetermined fixed axis. For the case in which the rotation takes place on random axes, without being the main axes of inertia, the mass inertia tensor is the most appropriate for the kinematic and dynamic study of rotational movement. In the general movement of the rigid body in three-dimensional space, the mass inertia tensor is more appropriate for use because it makes it possible to obtain all the physical quantities associated with the movement, such as angular momentum, torque of external forces and rotational kinetic energy. Several possible experiments are listed in this work with the aim of studying theoretically and experimentally the rotational movement. Many of the experiments were treated theoretically and experimentally by our research group and presented on the YouTube video sharing platform, on the page https://www.youtube.com/channel/UC7m8xE0RUPForkdmit9ZQjw/playlists, making it much easier to follow the theory and the experiments proposed. Some experiments that are not very common but that allow the deepening of the theoretical application are also presented, such as that of Euler's Disc and that of the reverse movement of the solid asymmetric semielipsoidal device called Rattleback. The theory of the mass inertia tensor is presented and some important applications are made.
- Publication
Latin-American Journal of Physics Education, 2021, Vol 15, Issue 2, p1
- ISSN
1870-9095
- Publication type
Article