各位大大好， 小弟在看classical mechanics ( Goldstein着 ) 时， 有一段 ( 第4页末段 ) 不是很懂， 原文如下: The force applied to a particle may in some circumstances be given by the gradient of a scalar function that depends explicitly on both the position of particle and the time. Hover,the work done on the particle when it travels a distance ds,─> ─> -dV F 。 S = ───ds dS , is then no longer the total change in -V during the displacement, since V also changes explicitly with time as the particle moves. 问题来了，到底V是如何跟时间有显着的关系 ( 即式子长怎样 ) ? --

※ 发信站: 批踢踢实业坊(ptt.cc) ◆ From: 140.122.61.230 ※ 编辑: njvulfu 来自: 140.122.61.230 (03/02 21:16)