Measurements of the Flight Trajectory of a Spinning Soccer Ball and the Magnus Force Acting on It
The trajectory of a soccer ball, kicked with a spin to curve it into the goal, is strongly influenced by aerodynamic factors such as the Magnus force. Several studies using a wind-tunnel and high-speed cameras have investigated the Magnus force acting on a spinning soccer ball. However, the exact ef...
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| Format: | Article |
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MDPI AG
2020-06-01
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| Series: | Proceedings |
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| Online Access: | https://www.mdpi.com/2504-3900/49/1/88 |
| _version_ | 1797565370437992448 |
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| author | Takeshi Asai Kaoru Kimachi Richong Liu Masaaki Koido Masao Nakayama John Eric Goff Sungchan Hong |
| author_facet | Takeshi Asai Kaoru Kimachi Richong Liu Masaaki Koido Masao Nakayama John Eric Goff Sungchan Hong |
| author_sort | Takeshi Asai |
| collection | DOAJ |
| description | The trajectory of a soccer ball, kicked with a spin to curve it into the goal, is strongly influenced by aerodynamic factors such as the Magnus force. Several studies using a wind-tunnel and high-speed cameras have investigated the Magnus force acting on a spinning soccer ball. However, the exact effect of the Magnus force on the trajectory of a spinning soccer ball in free flight remains unclear. This study set out to use an optical three-dimensional motion-capture system to record the details of the flight of such a spinning soccer ball. The maximum curvature of the ball’s trajectory occurred in the middle of its flight. The sideways-directed Magnus force acting on the ball decreased as the ball’s speed decreased during the entire flight. Thus, it was concluded that the deflection of the trajectory of the ball decreases as the sideways-acting force decreases throughout the flight. |
| first_indexed | 2024-03-10T19:11:11Z |
| format | Article |
| id | doaj.art-7fb6c9ea6a0449d7a9671386d90058bc |
| institution | Directory Open Access Journal |
| issn | 2504-3900 |
| language | English |
| last_indexed | 2024-03-10T19:11:11Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Proceedings |
| spelling | doaj.art-7fb6c9ea6a0449d7a9671386d90058bc2023-11-20T03:48:19ZengMDPI AGProceedings2504-39002020-06-014918810.3390/proceedings2020049088Measurements of the Flight Trajectory of a Spinning Soccer Ball and the Magnus Force Acting on ItTakeshi Asai0Kaoru Kimachi1Richong Liu2Masaaki Koido3Masao Nakayama4John Eric Goff5Sungchan Hong6Faculty of Health and Sports Sciences, University of Tsukuba, Tsukuba City, Ibaraki 305-8574, JapanDoctoral Program of Coaching Science, University of Tsukuba, Tsukuba City, Ibaraki 305-8574, JapanGraduate school of Coaching Science, University of Tsukuba, Tsukuba City, Ibaraki 305-8574, JapanFaculty of Health and Sports Sciences, University of Tsukuba, Tsukuba City, Ibaraki 305-8574, JapanFaculty of Health and Sports Sciences, University of Tsukuba, Tsukuba City, Ibaraki 305-8574, JapanDepartment of Physics, University of Lynchburg, 1501 Lakeside Drive, Lynchburg, VA 24501-3113, USAFaculty of Health and Sports Sciences, University of Tsukuba, Tsukuba City, Ibaraki 305-8574, JapanThe trajectory of a soccer ball, kicked with a spin to curve it into the goal, is strongly influenced by aerodynamic factors such as the Magnus force. Several studies using a wind-tunnel and high-speed cameras have investigated the Magnus force acting on a spinning soccer ball. However, the exact effect of the Magnus force on the trajectory of a spinning soccer ball in free flight remains unclear. This study set out to use an optical three-dimensional motion-capture system to record the details of the flight of such a spinning soccer ball. The maximum curvature of the ball’s trajectory occurred in the middle of its flight. The sideways-directed Magnus force acting on the ball decreased as the ball’s speed decreased during the entire flight. Thus, it was concluded that the deflection of the trajectory of the ball decreases as the sideways-acting force decreases throughout the flight.https://www.mdpi.com/2504-3900/49/1/88soccerballtrajectoryspinMagnus force |
| spellingShingle | Takeshi Asai Kaoru Kimachi Richong Liu Masaaki Koido Masao Nakayama John Eric Goff Sungchan Hong Measurements of the Flight Trajectory of a Spinning Soccer Ball and the Magnus Force Acting on It Proceedings soccer ball trajectory spin Magnus force |
| title | Measurements of the Flight Trajectory of a Spinning Soccer Ball and the Magnus Force Acting on It |
| title_full | Measurements of the Flight Trajectory of a Spinning Soccer Ball and the Magnus Force Acting on It |
| title_fullStr | Measurements of the Flight Trajectory of a Spinning Soccer Ball and the Magnus Force Acting on It |
| title_full_unstemmed | Measurements of the Flight Trajectory of a Spinning Soccer Ball and the Magnus Force Acting on It |
| title_short | Measurements of the Flight Trajectory of a Spinning Soccer Ball and the Magnus Force Acting on It |
| title_sort | measurements of the flight trajectory of a spinning soccer ball and the magnus force acting on it |
| topic | soccer ball trajectory spin Magnus force |
| url | https://www.mdpi.com/2504-3900/49/1/88 |
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