88400 20210902121624.0 doi 10.1119/1.5145473 sideral 116755 ART-2020-116755 eng Gomes, Mário S. M. N. F. The effect of a tangential frictional force on rotating disks: an experimental approach 2020 Access copy available to the general public Unrestricted This paper describes an experiment with two touching rotating disks, whose movement is followed by video analysis. Within the disks’ movements, there are intervals with sliding and intervals without sliding, that is, intervals with frictional forces between the touching surfaces and intervals without it. This system configuration allows for measurement of the changeable magnitudes and directions of frictional forces (much more difficult to set up with translational motion). This activity may be used to combat students misconceptions of “frictional force always opposes the motion” and “between the same two bodies, one gets the same frictional force,” commonly found in the classroom, or just to reinforce the rotational dynamics relationships. info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 0.701 2020 PHYSICS, MULTIDISCIPLINARY 75 / 85 = 0.882 2020 Q4 T3 EDUCATION, SCIENTIFIC DISCIPLINES 41 / 44 = 0.932 2020 Q4 T3 0.41 2020 Physics and Astronomy (miscellaneous) 2020 Q2 Education 2020 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pereira da Silva, Pedro Ramos Silva, Manuela Martín-Ramos, Pablo Universidad de Zaragoza (orcid)0000-0003-2713-2786 5011 500 Universidad de Zaragoza Dpto. CC.Agrar.y Medio Natural Area Ingeniería Agroforestal 58, 4 (2020), 260-262 Phys. teach. PHYSICS TEACHER 0031-921X 867840 http://zaguan.unizar.es/record/88400/files/texto_completo.pdf Versión publicada 68475 http://zaguan.unizar.es/record/88400/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:88400 articulos driver 2021-09-02-08:49:14 ARTICLE