The ladder against the wall revisited

• Autores: Iain Maclnnes, John Huxtable
• Localización: School Science Review, ISSN 0036-6811, Vol. 97, Nº. 360, 2016 (Ejemplar dedicado a: Mathematics in science), págs. 84-89
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • When placing a ladder against a wall, what is the maximum angle from the wall to ensure the ladder won't slip? A simple experiment to determine the relationship between the angle and the coefficient of friction (µ) is described. Leading on from this, some thought is given to the implications of a negative value for the coefficient of friction, which the mathematical analysis suggests should be possible.