The Atwood machine revisited using smartphones

• Autores: Martin Monteiro, Cecilia Stari, Cecilia Cabeza, Arturo C. Marti
• Localización: The Physics Teacher, ISSN 0031-921X, Vol. 53, Nº. 6, 2015, pág. 373
• Idioma: inglés
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• Dialnet Métricas: 3 Citas
• Resumen

  • The Atwood machine is a simple device used for centuries to demonstrate Newton's second law. It consists of two supports containing different masses joined by a string. Here we propose an experiment in which a smartphone is fixed to one support. With the aid of the built-in accelerometer of the smartphone, the vertical acceleration is registered. By redistributing the masses of the supports, a linear relationship between the mass difference and the vertical acceleration is obtained. In this experiment, the use of a smartphone contributes to enhance a classical demonstration.