电动离心力定量分析演示仪  

Demonstration Instrument for Quantitative Analysis of Electric Centrifugal Force

作　　者：任薇薇 代伟 刘瑶 郑贤松 REN Weiwei;DAI Wei;LIU Yao;ZHENG Xiansong(School of Physics and Space Science,China West Normal University,Nanchong 637002,China)

机构地区：[1]西华师范大学物理与空间科学学院,四川南充637002

出　　处：《大学物理实验》2020年第2期93-96,共4页Physical Experiment of College

基　　金：西华师范大学教学改革与研究重大培育项目。

摘　　要：针对已有离心力演示仪存在的不足,新设计的电动离心力定量分析仪是让电机带动金属小球在水平面上的有机玻璃管内匀速旋转,在离心力作用下金属小球推动推板向外移动并压缩弹簧,通过测量弹簧的压缩量就可测出离心力的大小,将不可见的离心力转化为可见的弹簧压缩量,实验现象直观。借助该仪器能定量探究离心力公式F离=mω^2R中的各个物理量对离心力大小的影响,通过分析实验数据可归纳得出离心力公式的数学表达式。In view of the existing problems of the centrifugal force demonstration instrument,the new design of quantitative analyzer is to make the motor drive electric centrifugal force metal ball rotate at a constant speed in the horizontal plane organic glass tube.Under the action of centrifugal force metal balls push push plate outward and compress spring.The centrifugal force can be measured by measuring the compression spring,which transfers invisible centrifugal force into intuitive spring compression in the experiment phenomenon.This instrument can quantitatively explore the influence of each physical quantity in the centrifugal force formula F=mω^2R on centrifugal force,and then conclude the mathematical expression of the centrifugal force formula through experimental exploration.

关 键 词：离心力 电动 定量分析 圆周运动 演示仪 

分 类 号：O4-33[理学—物理]