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Function: require_once
수학동아 - 폴리매스
함께 풀고 싶은 문제
창의력을 기를 수 있는 수학 문제 또는 퍼즐을 내는 곳입니다.
space
2020.09.10 06:03
조회 431
이 팽이는 회전력이 0이 될 시 멈추고 언제나 회전력이 -20/s이고
공중에서 돌릴 시 5초간 돌릴수 있고 회전력이 공중에 있을 때는 +25/s(+25+(-20)=5), 내려왔을 때는 +5/s이다
(단, 공중 돌리기를 성공할 확률은 20%고 실패할 시 2초간 회전력이 -50/s다)(공중 돌리기는 10초에 한 번씩 할 수 있다
또 팽이를 쳐서 가속도를 붙힐 수 있는 데
| 실 종류 |
성공 확률 |
성공 |
실패 확률 |
실패 |
| 일반 |
50% |
+35/s |
50% |
-25/s |
| 고무 |
70% |
+40/s |
30% |
-75/s |
| 철사 |
20% |
+65/s |
80% |
-10/s |
| 털실 |
5% |
+10/s |
95% |
-5/s |
| 채찍 |
90% |
+55/s |
10% |
-500/s |
이다
단, 실은 3개만 쓸 수 있고 15초마다 쓸 수 있다
그럼 초기 회전력은 1000일때 팽이 돌리기를 가장 오래 할려면 어떻게 해야 할까?
지금 바로
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