| [ QuizWit ] in KIDS 글 쓴 이(By): guest (fanatical) <Scylla.Math.McG> 날 짜 (Date): 1998년 10월 27일 화요일 오전 08시 15분 00초 제 목(Title): [a] chinese jumping up & down a lot of people posted to kaist board. a few of them noticed that the center of mass does not change and hence no change in orbit. this is the correct argument to this problem. nothing to do with perturbation. |