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ERIC Number: EJ1001305
Record Type: Journal
Publication Date: 2012-Jul
Pages: 4
Abstractor: As Provided
Reference Count: 4
ISBN: N/A
ISSN: ISSN-0031-9120
Nonlinear Vibration of a Magnetic Spring
Zhong, Juhua; Cheng, Zhongqi; Ge, Ziming; Zhang, Yuelan; Lu, Wenqiang; Song, Feng; Li, Chuanyong
Physics Education, v47 n4 p444-447 Jul 2012
To demonstrate the different vibration characteristics of a magnetic spring compared with those of a metal one, a magnetic spring apparatus was constructed from a pair of circular magnets of the same size with an inside diameter of 2.07 cm and an outside diameter of 4.50 cm. To keep the upper magnet in a suspension state, the two magnets were placed vertically on a ceramic rod, with the same polarity sides facing against one another. The variation of magnetic field, resulting from the oscillation of the upper magnet, was recorded online with the aid of a magnetic field sensor and a data acquisition computer. It showed that the repulsion force has a nonlinear dependence on the gap between the two magnets in the form of a polynomial of power series. (Contains 1 table and 8 figures.)
Institute of Physics Publishing. The Public Ledger Building Suite 929, 150 South Independence Mall West, Philadelphia, PA 19106. Tel: 215-627-0880; Fax: 215-627-0879; e-mail: info@ioppubusa.com; Web site: http://journals.iop.org
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A