An inexpensive, multipurpose physical pendulum

• Autores: David Schultz
• Localización: The Physics Teacher, ISSN 0031-921X, Vol. 50, Nº. 7, 2012, pág. 436
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • The pendulum is a highly versatile tool for teaching physics. Many special purpose pendula for student experiments have been described.1�4 In this paper, I describe an inexpensive, multipurpose physical pendulum that can function as both a variable gravity and ballistic pendulum. I designed the apparatus for use in a rotational dynamics unit of the AP Physics C mechanics course. The use of a bike wheel hub pivot allows for low-friction, rugged operation that yields results commensurate with those obtained with much more expensive pendula available on the market (typically $500 per unit5), placing these types of experiments within reach of the teacher on a restricted budget