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Function: require_once
수학동아 - 폴리매스
함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
디듀우
2019.12.15 01:06
조회 969
반지름 r인 행성 표면에서 길이 l인 막대가 아래와 같이 운동하고 있다.
1. 행성은 완전한 구형, 막대는 완전한 선분이다.
2. 막대는 항상 행성의 표면과 한 점만 접해 있으며, 어느 부분도 행성 내부로 들어가지 않는다.
3. 막대는 행성의 적도 위에서 행성의 자전축과 같은 축으로, 행성과의 접점을 중심으로 각속도 ω로 회전한다.
4. 막대와 행성의 표면은 미끄러지지 않는다. 즉, 막대 표면의 접점과 행성 표면의 접점은 같이 바뀐다.
5. 막대는 시각 t=0일 때 중점이 행성의 중심을 기준으로 각변위 θ=0인 위치에서 행성에 접해 있는 상태로 출발하였다.
이때 막대의 중점의 행성의 중심을 기준으로 한 각변위 θ(t)를 구하시오.
대표이미지 출처 - http://folkency.nfm.go.kr/kr/dic/21/picture/4035
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디듀우
Lv.7
2019.12.22 01:40
사실 저도 큰 기대는 안했어요... 그냥 궁금해서...
문제 이해는 되시죠?ㅠㅠ 너무 어렵게 썼나...
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