Balancing broomsticks to a t!

• David Marasco ^[1]
  1. [1] Foothill College

     Foothill College

     Estados Unidos

     
• Localización: The Physics Teacher, ISSN 0031-921X, Vol. 64, Nº. 5, 2026, págs. 434-435
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • A classic question from rotational mechanics asks, “Is it easier to balance a broomstick heavy side up or heavy side down?”1,2 Measuring the time a student can balance an asymmetrically weighted meter stick in two orientations is a straightforward exercise that can be used to introduce or review the t′ framework,3 which guides lab students in comparisons of results and iterative improvement of their measurements. As a two-year college physics program, many of our students attend from other institutions, so while t′ is taught in the introductory mechanics labs, there is no guarantee that a student in a following lab course will be familiar with the material. To address this, the t′ concepts are reviewed in the first session of subsequent lab courses. The broomstick experiment is a quick and fun implementation. A spreadsheet with sample data is provided in the supplementary material as an example.