B2L2 寫:既然你這個留言這樣有禮貌,我可以與你談談。
I missed a statement “小麻雀的吱吱喳喳snipped”,而你回言“沒有禮貌,” and you are still as arrogant as ever.
第一,你在零G的環境下,談CG(center of gravity),已經可見你的無知。
我可以當你說的是CM(center of mass),來繼續這討論。
They are all the “same” point and from the true philosophy/形上學point of view, the “point” is “imaginary,” and different wording are only you lip-playing.
第二,“中間空空的地方”變成甜圈一部份,如何變? 甜圈形狀不變,有怎麽在變?不要告訴我甜圈轉了一圈後,把那空間圍著的笑話。
第三,何謂CG"生"在其中?生的科學定議是怎麼?一路的討論都在CG的位置,能不能離開物體,自創一個"生"的概念,又只是你左右逃避的行為。
你常説你每一件事都可以科學地解釋出來,不如你試試如何解說一下。
By the properties (“existence before being”) of the geometrical shape of donuts, and not just “donuts” but any such shapes. In 0G, there’s no movement, so there’s no CG, and the CG just “appears” as the object starts to move. Magical? No, it is called “reaction”; another example is, in a straight line movement, there is neither centrapedal force nor centrifugal force, nevertheless, once the object “turns,” both forces appear. It is these two forces determine how you can ski.
其實你只需要答你知不知道甜圈的CG在那,如果你知,那便告訴我們,那麼位置是否在甜圈裡面,就是這樣簡單。
Yes, the CG is in the middle of the center, if the donut has an evenly distributed mass. Simple enough?