摘要
为了弥补现行教科书中,离心运动的演示实验装置及离心现象产生实质的知识呈现不足,设计了符合学生认知规律的离心实验装置.该装置通过对比2个物体在相同的角速度下产生相反的运动状态,说明物体做离心运动,不是由角速度产生,而是只有合外为突然消失或是合外力不足以提供向心力时,才能产生离心运动.
In order to make up the deficiency in material, the experiment device on demonstrating centrifugal phenomenon is designed applying the cognition rules. The device compares two objects moving with same angular velocity but different moving status, then the reason of centrifugal movement, the suddenly disappearance of the resultant force or the deficiency of centripetal force, is explained.
出处
《物理实验》
2007年第6期37-38,41,共3页
Physics Experimentation
基金
吉林省基础教育课程改革实验研究规划第二批重点立项课题(No.jlkg06z013)
关键词
离心现象
演示实验
向心力
角速度
centrifugal phenomenon
demonstrating experiment
centripetal force
angular velocity