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ERIC Number: EJ1189251
Record Type: Journal
Publication Date: 2018-Sep
Pages: 2
Abstractor: As Provided
ISSN: ISSN-0031-921X
Concurrent and Coplanar Forces that Are in Equilibrium
Goh, Ker Liang
Physics Teacher, v56 n6 p384-385 Sep 2018
If a body is in equilibrium under the action of three non-parallel coplanar forces, the forces must be concurrent, that is, must meet at a single point. Specific examples are provided here to illustrate the validity of this statement by the use of free-body diagrams as well as during the discussion of equilibrium and moments. These cases are usually not presented in contemporary textbooks; hence, it is our intention to provide examples to help in visualizing the concept. A discussion about four coplanar forces is included.
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: Teachers
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A