EXPERIMENTAL STUDY OF DAMPED OSCILLATIONS OF A TORSIONAL PENDULUM
Abstract
A laboratory work methodic on the experimental study of damping torsion oscillations under educational laboratory conditions was developed in this article. A torsion pendulum, which is usually used for bullet flight speed experimental determination based on angular momentum, mechanical energy conservation laws, and the laws of natural oscillations patterns, was used for this purpose. A torsion pendulum is a rod suspended on a vertically stretched steel wire and capable of performing oscillatory motion in the horizontal plane. Two rectangle shaped bodies are attached at the rod's ends, also two identical cylindrical weights that can be moved, changing the inertia moment of the pendulum, and locked in a chosen position, are arranged on the steel rod. Damping parameter dependencies are studied: the damping coefficient, damping logarithmic decrement, relaxation time, amount of oscillations during relaxation and the mechanical system quality factor against pendulum inertia moment. The least squares method was used in the processing of the experimental results. The results from this experimental study prove theoretical dependencies fidelity. The method used in this study may be recommended for physical practicum at universities when there is not a finished installation for the damping of torsional oscillations.References
Yevgrafova, N. N., & Kagan, V. L. (1970). Rukovodstvo k laboratornym rabotam po fizike, uchebnoye posobiye dlya radiotekhnicheskikh i elektropriborostroitel'nykh spetsial'nostey vuzov [Manual to laboratory works in physics, textbook for radio and electrical construction specialties of high schools]. Moscow, Russia: Higher school.
Korzun, I. N. (1991). Laboratornyye raboty po mekhanike i molekulyarnoy fizike [Laboratory work on mechanics and molecular physics]. Almaty, Kazakhstan: Kazakh National University.
Syzdykowa, R. N., & Kenzhebekova, A. I. (2015). Fizika: kolebaniya, metodicheskiye ukazaniya k vypolneniyu laboratornykh rabot dlya studentov vsekh form obucheniya vsekh spetsial'nostey [Physics: oscillations, methodical instructions to laboratory works for students of all forms of education and for all specialties]. Almaty, Kazakhstan: AUPET.
Akimov, A. I., Baranov, A. N., & Saletskiy, A. M. (2000). Fizicheskiy mayatnik: Puti povysheniya tochnosti izmereniya [Physical pendulum: Ways of Increasing the Accuracy Measurements of g]. Physics in Higher Education, 6(2), 52–61.
Astapov, Ye. N., Botneva, Z. N., Kochkin, YU. P., Lednov, A.YU., Lisovskaya, M. A., Mashkin, A. G., Mel'tser-Shafran, L.V., Raskuzhina, I. V., Savinova, N. A., & Savchenko, YU. I. (2011). Mekhanika: laboratornyy praktikum dlya studentov vsekh spetsial'nostey [Mechanics: laboratory practicum for students of all disciplines]. Magnitogorsk, Russia: MSTU.
Nikulin, R.N., & Gretsova, N.V. (2007). Fizicheskiy praktikum. Uchebnoye posobiye [Physical practicum. Textbook]. Volgograd, Russia: Volgograd State Technical University.
Kachevskiy, A. N. (1998). Laboratornaya rabota: Izucheniye zatukhayushchikh krutil'nykh kolebaniy, uprugikh i neuprugikh svoystv materiala [Laboratory Project Studying of Damped Torsion Vibrations, Elasticity and Inelasticity Material Property]. Physics in Higher Education, 6(1), 105–112.
Iskakov, Zh. (2014). Methods of experimental verification of steiner theorem in physical practicum and laboratory work. CBU International Conference Innovation Proceedings 2014, Technology Transfer and Education, 316 – 323.
Avenarius, I.A., & Afanasyev, B.L. (2010). Laboratornyy praktikum po fizike: Chast' 1. Mekhanika [Laboratory practical practicum on physics: Part 1. Mechanics]. Moscow, Russia: Moscow Road Institute.
Salamatina, A. M., Karsybayev, M. SH., & Baypakbayev, T. S. (2015). Fizika. Mekhanika: metodicheskiye ukazaniya k vypolneniyu laboratornykh rabot dlya studentov vsekh form obucheniya vsekh spetsial'nostey [Physics. Mechanics: methodical instructions to laboratory works for students of all forms of education and for all specialties]. Almaty, Kazakhstan: AUPET.
D'yakonov, V. P. (1987). Spravochnik po algoritmam i programmam na yazyke beysik dlya personal'nykh EVM [Handbook
on Algorithms and Programs in BASIC Language for Personal Computers]. Moscow, Russia: Printing House Science.
Darkov, A.V., & Shpiro, G.S. (1975). Soprotvleniye materialov [Resistance of materials]. Moscow, Russia: Higher school.
Copyright information
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License (Creative Commons Attribution License 3.0 - CC BY 3.0) that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
info@iseic.cz, www.iseic.cz, ojs.journals.cz
