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ERIC Number: EJ1165801
Record Type: Journal
Publication Date: 2018-Jan
Pages: 2
Abstractor: As Provided
ISSN: ISSN-0031-921X
Amazing Vibrations within the Homopolar Motor
Bednarek, Stanislaw
Physics Teacher, v56 n1 p47-48 Jan 2018
The most common type of homopolar motor comprises a cylindrical neodymium magnet, a battery, and a non-ferromagnetic frame rotating around the battery. Here, the author substituted a coiled spring for the frame. Due to this change, a new and intriguing effect emerges, the axial buzzing of the spring during its rotation. This paper describes the construction of this motor and explains the reasons for the observed vibrations.
American Association of Physics Teachers. One Physics Ellipse, College Park, MD 20740. Tel: 301-209-3300; Fax: 301-209-0845; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A