妈妈晾的衣服经常被风吹跑,有时衣架还在,衣服不见了,有时衣架和衣服都不见了!妈妈很苦恼,于是我上网查到了各种各样的防风衣架,可是效果依然不理想。使用携带也不方便。我决定利用学过的有关磁铁的知识,设计强磁式防风衣架。我画了草图,把衣架的钩子做成两半,并且可以活动,连接处各安装一块磁铁,吸住后,就可以抱住晾衣杆了!我把衣架分成上下两根横杆,每个横杆的两端都设有磁铁,利用异极相吸的原理,只要把其中一根 My mother’s clothes were often run by the wind, and sometimes the clothes hangers were still there. The clothes were gone. Sometimes the clothes hangers and the clothes were gone! The mother was so upset that I found all kinds of windbreak hangers on the Internet, but the effect was still not satisfactory. It is inconvenient to carry. I decided to make use of the knowledge of magnets learned to design strong magnetic windbreaker hangers. I drew sketches, made the hanger hooks in two halves, and movable, each fitted with a magnet, and after sucking, I could hold the clothes rail! I divided the hanger into two rails, each one The two ends of the bar are equipped with magnets, using the principle of heteropolar attraction, as long as one of them