Maximizing tangential frictional forces effects in bidimensional collisions: a study of the tangent restitution coefficient through a video analysis approach
In this work we used the video analysis technique to investigate the contribution of the friction forces to the dynamic of a series of oblique collisions of a basketball against the floor’s surface. This contribution was evaluated through the tangent restitution coefficients associated to these coll...
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| Format: | Article |
| Language: | Portuguese |
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Sociedade Brasileira de Física
2023-01-01
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| Series: | Revista Brasileira de Ensino de Física |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172023000100405&tlng=en |
| _version_ | 1828062448660250624 |
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| author | A.G. Rocha R.S. Dutra L.C. Ribeiro |
| author_facet | A.G. Rocha R.S. Dutra L.C. Ribeiro |
| author_sort | A.G. Rocha |
| collection | DOAJ |
| description | In this work we used the video analysis technique to investigate the contribution of the friction forces to the dynamic of a series of oblique collisions of a basketball against the floor’s surface. This contribution was evaluated through the tangent restitution coefficients associated to these collisions, which, in general, presented values distinct from the unit, proving, thus, its importance. Additionally, the appreciably values bigger than unity obtained for this quantity quantitatively confirms the physical scenario suggested in a previous work by some of the authors [1] which is governed by the torques transmitted to the ball during the successive collisions and characterized by variations on the magnitudes and even on the directions of the friction forces. To support this dynamic we considered a ball of relatively sizeable radius and mass, and launched with a certain spin velocity. Also, in order to increase the friction coefficient, the floor’s surface was covered with a rough and rubberized material. |
| first_indexed | 2024-04-10T22:29:19Z |
| format | Article |
| id | doaj.art-1271e88886a94c318571a66aae414ac8 |
| institution | Directory Open Access Journal |
| issn | 1806-9126 |
| language | Portuguese |
| last_indexed | 2024-04-10T22:29:19Z |
| publishDate | 2023-01-01 |
| publisher | Sociedade Brasileira de Física |
| record_format | Article |
| series | Revista Brasileira de Ensino de Física |
| spelling | doaj.art-1271e88886a94c318571a66aae414ac82023-01-17T07:31:06ZporSociedade Brasileira de FísicaRevista Brasileira de Ensino de Física1806-91262023-01-014510.1590/1806-9126-rbef-2022-0277Maximizing tangential frictional forces effects in bidimensional collisions: a study of the tangent restitution coefficient through a video analysis approachA.G. RochaR.S. Dutrahttps://orcid.org/0000-0002-1897-2313L.C. RibeiroIn this work we used the video analysis technique to investigate the contribution of the friction forces to the dynamic of a series of oblique collisions of a basketball against the floor’s surface. This contribution was evaluated through the tangent restitution coefficients associated to these collisions, which, in general, presented values distinct from the unit, proving, thus, its importance. Additionally, the appreciably values bigger than unity obtained for this quantity quantitatively confirms the physical scenario suggested in a previous work by some of the authors [1] which is governed by the torques transmitted to the ball during the successive collisions and characterized by variations on the magnitudes and even on the directions of the friction forces. To support this dynamic we considered a ball of relatively sizeable radius and mass, and launched with a certain spin velocity. Also, in order to increase the friction coefficient, the floor’s surface was covered with a rough and rubberized material.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172023000100405&tlng=envideo analysisinelastic collisionstangential restitution coefficient |
| spellingShingle | A.G. Rocha R.S. Dutra L.C. Ribeiro Maximizing tangential frictional forces effects in bidimensional collisions: a study of the tangent restitution coefficient through a video analysis approach Revista Brasileira de Ensino de Física video analysis inelastic collisions tangential restitution coefficient |
| title | Maximizing tangential frictional forces effects in bidimensional collisions: a study of the tangent restitution coefficient through a video analysis approach |
| title_full | Maximizing tangential frictional forces effects in bidimensional collisions: a study of the tangent restitution coefficient through a video analysis approach |
| title_fullStr | Maximizing tangential frictional forces effects in bidimensional collisions: a study of the tangent restitution coefficient through a video analysis approach |
| title_full_unstemmed | Maximizing tangential frictional forces effects in bidimensional collisions: a study of the tangent restitution coefficient through a video analysis approach |
| title_short | Maximizing tangential frictional forces effects in bidimensional collisions: a study of the tangent restitution coefficient through a video analysis approach |
| title_sort | maximizing tangential frictional forces effects in bidimensional collisions a study of the tangent restitution coefficient through a video analysis approach |
| topic | video analysis inelastic collisions tangential restitution coefficient |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172023000100405&tlng=en |
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