Exploring Friction with the Ancient Egyptians
作者: Susan M. RennerDaniel D. Schwert
作者单位: 1University of St. Francis , Joliet, IL
刊名: The Physics Teacher, 2019, Vol.57 (9)
来源数据库: American Association of Physics Teachers
DOI: 10.1119/1.5135794
原始语种摘要: We devised an activity to explore friction by testing some of the common theories on how ancient Egyptians moved the stones used to build the pyramids. The activity is suitable for a high school physics course or introductory college courses for both science majors and non-science majors. The students investigate dragging a 1-kg mass (representing a stone) on a small wooden sled under three conditions: over dry sand, using wooden rollers over dry sand, and over wet sand. This last condition has been recently proposed as a potential method used by the Egyptians. The force required to pull the sled at a constant velocity is measured and used to calculate the kinetic coefficient of friction for each of the three test conditions. Students then perform a similar activity pulling their...
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关键词翻译
关键词翻译
  • majors 大公司
  • pulling 牵引
  • wooden 木制的
  • professor 教授
  • ancient 古代的
  • activity 活度
  • conditions 条件式
  • science 科学
  • volleyball 排球
  • dragging 刮平