Literaturnachweis - Detailanzeige
| Autor/in | Keeports, David |
|---|---|
| Titel | A More General "U = mgh" |
| Quelle | In: Physics Teacher, 47 (2009) 5, S.286-287 (2 Seiten)Infoseite zur Zeitschrift
PDF als Volltext |
| Sprache | englisch |
| Dokumenttyp | gedruckt; online; Zeitschriftenaufsatz |
| ISSN | 0031-921X |
| DOI | 10.1119/1.3116838 |
| Schlagwörter | Science Instruction; Textbooks; Equations (Mathematics); Physics; Scientific Concepts; Energy; Astronomy |
| Abstract | In problems dealing with the Earth's gravity, students are frequently bewildered by the fact that the two common expressions for potential energy, "mgh" and "-Gm[subscript e]m/r", differ in sign and differ considerably in form. Some textbooks demonstrate that the more familiar first expression is a special case of the more general second equation providing that an object is near to the Earth's surface. In this paper I derive an equation that resembles the familiar "U = mgh" but that applies to an object of mass "m" at any height "h" above the Earth's surface. (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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