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许多同学都喜欢看体育比赛,不过在观看精彩比赛的同时,同学们可曾想过这些体育项目与物理学科有什么联系?下面我们就结合邮票上的体育项目介绍一些体育运动中的物理知识.1975年6月10日,邮电部发行《武术》特种邮票,全套6枚.武术是我国传统体育项目,许多武术项目中都包含着丰富的物理知识,尤其是“平衡”.(6-2)画面为剑术.以画面中的舞剑者为例,只有当她身体重心在地面的映射落在支撑脚上时,她才能平衡.如果她踮起脚,支撑面就会变小,重心的映射落在支撑脚上的几率也就变小,人就很容易失去平衡.
Many of our classmates like to watch sporting events, but while watching exciting games, have students ever wondered how these sports and physical sciences are related? In the following, we will introduce some physical knowledge in sports in conjunction with the sports on stamps. On June 10, 1975, the Ministry of Posts and Telecommunications issued a special “Wushu” stamp with a full set of 6. Wushu is a traditional sport in China, and many martial arts programs contain a wealth of physical knowledge, especially "6- 2) The picture is fencing. Take the sword-dancer in the picture as an example, she can balance only when the mapping of her center of gravity on the ground falls on the supporting feet, and if she pushes her feet, the supporting surface will become smaller and the center of gravity The probability of the map falling on the support feet will become smaller, people can easily lose balance.