向心加速度演示仪设计制作与教学应用  

Design and Application on Experimental Facility of Validating Centripetal Acceleration Formula

作　　者：吴东兴 米望琛 熊子天 巫玟桐 孙元赟 李韵寒 陈晓莉[1] WU Dong-xing;MI Wang-chen;XIONG Zi-tian;WU Wen-tong;SUN Yuan-bin;LI Yun-han;CHEN Xiao-li(School of Physical Science and Technology, Southwest University, Chongqing 400715, China;Chongqing Nankai Secondary School, Chongqing 400300, China)

机构地区：[1]西南大学物理科学与技术学院,重庆400715 [2]重庆市南开中学校,重庆400300

出　　处：《西南师范大学学报（自然科学版）》2019年第5期41-44,共4页Journal of Southwest China Normal University(Natural Science Edition)

基　　金：西南大学2017年度教育教学改革研究项目(2017JY051);重庆市第六期青少年创新人才培养雏鹰计划项目(CY170201)

摘　　要：设计了由动力单元、调速单元、测速单元和测角度单元组成的实验装置,介绍了装置的组成与原理、教学应用方法及实验结果.该装置不但能形象直观地演示在匀速圆周运动中,向心加速度与角速度和半径的定性关系,而且可以定量验证匀速圆周运动向心加速度计算式a=ω^2r的正确性,从而加深学生对公式a=ω^2r的理解与记忆.This experimental facility is composed of four parts: the power unit, velocity controlling unit, velocity measuring unit and angle measuring unit, which not only show the qualitative relationship of centripetal acceleration with angular speed and radius, but also verify the quantitative relationship of centripetal acceleration with angular speed and radius in uniform circular motion, thus it can help students to deepen their comprehension of formula. This article mainly introduces constitute, principle, methods and result of the experiment.

关 键 词：向心加速度 演示仪 设计制作 应用 

分 类 号：G633[文化科学—教育学]