중등학교 에너지 보존 실험의 검증 및 새로운 실험 방법의 고안 = Development of a New Experimental Apparatus for Mechanical Energy Conservation in Secondary School Physics

다국어 초록 (Multilingual Abstract)

We examined experiments for kinetic energy conservation in the high school textbook of Physics I and Physics II for the 6th National Science Curriculum and designed a new kit which enables to reduce experimental errors. Most experiments in the existing textbooks deal with the energy conservation for gravitational potential energy transforming to kinetic energy of the same object. We carried out the most commonly used two experiments and found that the experimental errors exceed more than 10~20 percent if carried out without carefulness. This may possibly make students suspect the mechanical energy conservation law. Our new kit, on the other hand, exhibits that the mechanical energy conserves with an error of less than 6% even in the process of transferring the elastic potential energy of one object to the kinetic energy of an another object.