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가슴의 크기가 증가할수록 가슴내부가 비어있지 않는한 질량또한 증가합니다.
하늘이의 가슴크기에 따른 질량 및 관성의 변화를 계산해보고 일정량의 external force를 가했을때의 출렁진동량과 equilibrium으로 돌아오기까지 걸리는 시간을 계산하여봅시다.
p = mv
F = ma
m = Volume*density