ERIC Number: EJ1154235
Record Type: Journal
Publication Date: 2017-Nov
Abstractor: As Provided
Speed of Transverse Waves in a String Revisited
Rizcallah, Joseph A.
Physics Education, v52 n6 Article 065006 Nov 2017
In many introductory-level physics textbooks, the derivation of the formula for the speed of transverse waves in a string is either omitted altogether or presented under physically overly idealized assumptions about the shape of the considered wave pulse and the related velocity and acceleration distributions. In this paper, we derive the named formula by applying Newton's second law or the work-energy theorem to a finite element of the string, making no assumptions about the shape of the wave. We argue that the suggested method can help the student gain a deeper insight into the nature of waves and the related process of energy transport, as well as provide a new experience with the fundamental principles of mechanics as applied to extended and deformable bodies.
Descriptors: Physics, Mathematical Formulas, Scientific Concepts, Scientific Principles, Science Instruction, Teaching Methods, Mechanics (Physics), Motion
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Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A