Remarks on the conservation of mechanical energy in introductory mechanics

2005/06/08 by F. C. Santos, F C Santos, V. Soares +6
Physics and Astronomy · #Classical Physics (physics.class-ph) #Experimental and Theoretical Physics Studies #FOS: Physical sciences #physics.class-ph

paper · pdf · doi:10.48550/arxiv.physics/0506065

Latex file, 8 pages, no figures; typos corrected

openalex publication_date 2005/06/08 · arxiv created 2005/06/18 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We discuss the work-kinetic energy theorem and the mechanical energy conservation theorem in the context of general physics courses. The motivation is the fact that all modern texts on introductory mechanics show the same conceptually dangerous statement that besides obliterating the concept of mechanical work, diminishing the importance of the work-kinetic energy theorem, leads to erroneous applications of the energy conservation theorem and at the same eliminates its relationship with the principle of the conservation of the mechanical momentum.

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