Segmented Hoop as a Physical Pendulum
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| Title: | Segmented Hoop as a Physical Pendulum |
|---|---|
| Language: | English |
| Authors: | Layton, William, Rodriguez, Nuria |
| Source: | Physics Teacher. Oct 2013 51(7):418-419. |
| Availability: | 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 |
| Peer Reviewed: | Y |
| Page Count: | 2 |
| Publication Date: | 2013 |
| Document Type: | Journal Articles Reports - Descriptive |
| Descriptors: | Science Instruction, Physics, Motion, Scientific Principles, Demonstrations (Educational), Mechanics (Physics) |
| DOI: | 10.1119/1.4820855 |
| ISSN: | 0031-921X |
| Abstract: | An interesting demonstration with a surprising result is to suspend a hoop from a point near its edge and set it swinging in a vertical plane as a pendulum. If a simple pendulum of length equal to the diameter of the hoop is set oscillating at the same time, the two will have nearly the same period. However, the real surprise is if the pendulum is segmented horizontally (as illustrated in Fig. 1 ) into smaller pieces that are symmetrical about the point of suspension, each smaller segment will also have the same period. Constructing such a demonstration can be difficult, but thanks to a suggestion from a fellow physics teacher a dissectible hula hoop can be purchased that serves well in this demonstration. 2 A setup that has been repeated many times at various physics teacher meetings in Southern California is illustrated below. |
| Abstractor: | As Provided |
| Number of References: | 5 |
| Entry Date: | 2014 |
| Accession Number: | EJ1024950 |
| Database: | ERIC |
| Abstract: | An interesting demonstration with a surprising result is to suspend a hoop from a point near its edge and set it swinging in a vertical plane as a pendulum. If a simple pendulum of length equal to the diameter of the hoop is set oscillating at the same time, the two will have nearly the same period. However, the real surprise is if the pendulum is segmented horizontally (as illustrated in Fig. 1 ) into smaller pieces that are symmetrical about the point of suspension, each smaller segment will also have the same period. Constructing such a demonstration can be difficult, but thanks to a suggestion from a fellow physics teacher a dissectible hula hoop can be purchased that serves well in this demonstration. 2 A setup that has been repeated many times at various physics teacher meetings in Southern California is illustrated below. |
|---|---|
| ISSN: | 0031-921X |
| DOI: | 10.1119/1.4820855 |
