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杨利伟在神舟5号舱内演示的失重现象,给同学们留下了深刻的印象,提供了遐想的空间．但在日常生活中却无法真正体验,取而代之的是:手托书本上下变速移动,感觉手受到的压力发生变化;重物在细线拉力作用下静止于空中,突然上提则线断开;底部有孔的瓶中装满水,静止时有水从瓶底小孔流出,而自由释放或向任意方向抛出后,水不再流出等等．关于超重和失重的例子很多,那您还能否用简单的生活用品来设计一些相关的实验呢?下面是笔者关于失重现象的一些设想和做法,和同学们一起来探讨．
The weightlessness demonstrated by Yang Liwei in the Shenzhou 5 cabin left a deep impression on the students and provided room for fantasies. But in everyday life, it cannot be really experienced. Instead, the book is moved up and down in a variable speed, and the pressure on the hand is changed. The weight is still in the air under the tension of the thin line, and suddenly the thread is disconnected; The bottle with holes is filled with water, and when water is at rest, water flows out from the bottom hole of the bottle, and after free release or thrown in any direction, the water no longer flows out. There are many examples of overweight and weightlessness. Can you use simple household items to design some related experiments? The following are some of the author’s ideas and practices on weightlessness, and discussed with the students.