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ERIC Number: EJ868552
Record Type: Journal
Publication Date: 2009-Nov
Pages: 4
Abstractor: As Provided
ISSN: ISSN-0031-9120
A Magnetic Set-Up to Help Teach Newton's Laws
Panijpan, Bhinyo; Sujarittham, Thanida; Arayathanitkul, Kwan; Tanamatayarat, Jintawat; Nopparatjamjomras, Suchai
Physics Education, v44 n6 p599-602 Nov 2009
A set-up comprising a magnetic disc, a solenoid and a mechanical balance was used to teach first-year physics students Newton's third law with the help of a free body diagram. The image of a floating magnet immobilized by the solenoid's repulsive force should help dispel a common misconception of students as regards the first law: that stationary objects are not being acted on by any force at all. Dropping the magnet onto the electrified solenoid, which can change polarity, can lead to more sophisticated elaboration of the second law. (Contains 5 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:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A