在日常生活中,很多事情看起来简单,但里面蕴含着数学知识呢.不信?让张院士给大家讲讲吧.苹果能从树上落到地上,为什么茶杯盖子不会掉到茶杯里去呢?这是我国著名数学家华罗庚.在一次给中学生讲课中提到的问题.你也许马上就会回答:这有什么值得一提的呢?盖子比口大,当然掉不进去了.确实,盖子比口小,它一定会掉进去.不过,盖子比口大,是不是就一定掉不进去呢?有一种长方形的茶叶盒,它的盖子比口 In everyday life, many things seem simple, but there is a mathematical knowledge in it. Do not believe? Let Professor Zhang tell you about it. Apple can fall from the tree to the ground, why the cup lid does not fall into the cup This is the famous mathematician Hua Luogeng in a lecture to middle school students mentioned in the question.You may be right away to answer: What is worth mentioning the lid than the mouth, of course, can not get in. Indeed, the lid Than the mouth is small, it will fall in. However, the lid than the mouth, it is not necessarily out of it? There is a rectangular tea box, its cover than the mouth