• Title/Summary/Keyword: 이상화

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Study on the cycloidal pendulumn as a method to test the isochronism of a pendulumn (진자의 등시성 확인 실험을 위한 사이클로이드 진자의 활용 방안 연구)

  • Kim, Ji-Yeon;Choi, Ho-Meoyng
    • Journal of Science Education
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    • v.32 no.1
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    • pp.1-18
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    • 2008

  • We investigated 8th grade science textbooks and their instructor's manuals treating the ideal condition for isochronism of a simple pendulum. The isochronism, i.e. the period is independent of amplitude, is satisfied only if the amplitude is very small. This is so called "ideal condition" for isochronism of a simple pendulum. Most textbooks and instructor's manuals are found not to state this ideal condition properly, which often leads to the deviation between experimental data and theoretical calculation. This difference between theoretical and experimental results makes students to create a sense of alienation from the real world and eventually keeps them away from physics. We thus study the cycloidal pendulum as an alternative method to test the isochronism regardless of amplitude and discuss the practical utility of it in class.

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