The Wilberforce pendulum: a complete analysis using micro accelerometer/gyroscope, smartphone and dynamical modeling.
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| Title: | The Wilberforce pendulum: a complete analysis using micro accelerometer/gyroscope, smartphone and dynamical modeling. |
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| Authors: | Torzo, Giacomo1 torzog@gmail.com, Zanichelli, Massimiliano2, Pasqualotto, Stefano3, D'Anna, Michele |
| Source: | Latin-American Journal of Physics Education. Mar2025, Vol. 19 Issue 1, p1-9. 9p. |
| Subject Terms: | Motion analysis, Freeware (Computer software), Pendulums, Oscillations, Acquisition of data, Gyroscopes |
| Abstract (English): | The Wilberforce pendulum is a didactical device often used in class demonstration to show the amazing phenomenon of coupled oscillations (rotational and longitudinal) producing beats in a special mass-spring set up. The phenomenon is particularly surprising for a distant observer, who easily detects the longitudinal motion, but may skip the presence of rotation. To him (her) the vertical oscillation appears to damp out completely and then it rises again without external action (as if an invisible force would come in). In this paper we propose a revised version of the classical experiment, suggesting a deeper understanding of phenomena through real time data acquisition of both the rotation and the vertical oscillation, using a MEMS accelerometer/gyroscope and the free software Phyphox to show the device motion on a smartphone screen. A detailed analysis of the motion and of the energetical aspects are then performed using the free modeling tool InsightMaker. [ABSTRACT FROM AUTHOR] |
| Abstract (Spanish): | El péndulo de Wilberforce es un dispositivo didáctico que se utiliza a menudo en demostraciones en clase para mostrar el asombroso fenómeno de las oscilaciones acopladas (rotacionales y longitudinales) que producen pulsaciones en un sistema especial de masa-resorte. El fenómeno resulta particularmente sorprendente para un observador distante, que detecta fácilmente el movimiento longitudinal, pero puede pasar por alto la presencia de rotación. Para él o ella, la oscilación vertical parece amortiguarse por completo y luego volver a ascender sin acción externa (como si interviniera una fuerza invisible). En este artículo, proponemos una versión revisada del experimento clásico, que sugiere una comprensión más profunda de los fenómenos mediante la adquisición de datos en tiempo real tanto de la rotación como de la oscilación vertical, utilizando un acelerómetro/giroscopio MEMS y el software gratuito Phyphox para mostrar el movimiento del dispositivo en la pantalla de un teléfono inteligente. Posteriormente, se realiza un análisis detallado del movimiento y de los aspectos energéticos utilizando la herramienta de modelado gratuita InsightMaker. [ABSTRACT FROM AUTHOR] |
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| Database: | Education Research Complete |
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