[물리] Which is faster * Brachistochrone Curve

[물리] Which is faster * Brachistochrone Curve
C4D4U

Which is faster?  First write in the comments and then start the video.
For me the topic brachistochrone is still very new. But I am fascinated by what is behind it. If you haven't heard of it yet, you should take a closer look.
https://de.wikipedia.org/wiki/Brachis...
https://google.com/search?q=brachisto...

https://youtu.be/TIopneBToLQ

https://heisme.skymoon.info/article/SuggInfo/1633  

어떤 가벼운 흥분(興奮)도 희롱(戱弄)이나 속셈 없는 노래의 감동(感動)도 내게는 없다 [하늘-나의 슬픔]