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Function: require_once

수학동아 - 폴리매스
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[창의 퍼즐] 알자스 루단의 역학 문제
알자스 루단 2021.01.15 07:43 조회 405

눈으로만 이루어진 경사각 30도의 비탈면에서 스키 장비를 포함한 질량이 60kg인 스키선수가 등속직선운동 하고 있다. 주어진 마찰계수 표와 중력가속도 상수, 루트 3의 값을 이용해 스키의 재질을 유추해라. (풀이도 써주세요) 단, 지면과 스키 사이의 마찰만 고려하며, 모든 마찰은 균일하다.

중력가속도=10m/s^2

루트 3=1.7

마찰계수

눈 위의 강철 0.29

눈 위의 플라스틱 0.87

눈 위의 얼음 0.98

눈 위의 나무 0.58

눈 위의 기름칠한 강철 0.15

 

(마찰계수 값은 실제 값이 아닙니다)

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