Conservation of Angular Momentum with a 3D-Printed Launcher
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Alan DeWeerd
[1]
;
Eric Hill
[1]
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[1] University of Redlands
University of Redlands
Estados Unidos
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- Localización: The Physics Teacher, ISSN 0031-921X, Vol. 62, Nº. 5, 2024, págs. 340-341
- Idioma: inglés
- Enlaces
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Resumen
Student difficulties in understanding the angular momentum of particles have been documented.1 Examples involving a child jumping on or off a merry-go-round are often used to illustrate a particle’s angular momentum. Analogous experiments have been suggested in which a ball collides completely inelastically2,3 with a catcher on the arm of a rotational apparatus or is launched4 from the arm. Although these experiments were done with homemade apparatuses, the collision experiment can now be performed with PASCO’s projectile launcher, low-friction rotating platform, and some accessories.5 A catcher6 was previously available for purchase from PASCO, but they have now made a CAD (computer-aided design) file (STL format) for a 3D-printed version available online.7 We describe how to perform the other experiment, where a ball is fired from the beam, using the same rotating platform and a launcher based on a 3D-printed part.8
