Magnetic Braking: A Video Analysis

• Autores: J.A. Molina-Bolívar, A.J. Abella-Palacios
• Localización: The Physics Teacher, ISSN 0031-921X, Vol. 50, Nº. 7, 2012, pág. 412
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • This paper presents a laboratory exercise that introduces students to the use of video analysis software and the Lenz's law demonstration. Digital techniques have proved to be very useful for the understanding of physical concepts. In particular, the availability of affordable digital video offers students the opportunity to actively engage in kinematics in introductory-level physics.1,2 By using digital videos frame advance features and �marking� the position of a moving object in each frame, students are able to more precisely determine the position of an object at much smaller time increments than would be possible with common time devices. Once the student collects data consisting of positions and times, these values may be manipulated to determine velocity and acceleration. There are a variety of commercial and free applications that can be used for video analysis. Because the relevant technology has become inexpensive, video analysis has become a prevalent tool in introductory physics courses.