Literaturnachweis - Detailanzeige
| Autor/in | Van Domelen, David |
|---|---|
| Titel | Showing Area Matters: A Work of Friction |
| Quelle | In: Physics Teacher, 48 (2010) 1, S.28-29 (2 Seiten)Infoseite zur Zeitschrift
PDF als Volltext |
| Sprache | englisch |
| Dokumenttyp | gedruckt; online; Zeitschriftenaufsatz |
| ISSN | 0031-921X |
| DOI | 10.1119/1.3274355 |
| Schlagwörter | Scientific Concepts; Physics; Science Instruction; Geometric Concepts; Models; Evaluation Methods; Science Teachers; College Students; Universities; Missouri |
| Abstract | Typically, we teach the simplified friction equation of the form F[subscript s] = [mu][subscript s]N for static friction, where F[subscript s] is the maximum static friction, [mu][subscript s] is the coefficient of static friction, and "N" is the normal force pressing the surfaces together. However, this is a bit too simplified, and doesn't work well in cases where the surface area is large and the normal force small. Rather, a better model in such cases would be F[subscript s] = [mu][subscript s]N + c[subscript s]A, where c[subscript s] is a new coefficient for the static friction due to contact area. Of course, it would help for students to be able to quantitatively measure this, and that's where this paper comes in. (As Provided). |
| Anmerkungen | American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail: pubs@aapt.org; Web site: http://scitation.aip.org/tpt |
| Erfasst von | ERIC (Education Resources Information Center), Washington, DC |
| Update | 2017/4/10 |
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