杠杆演示仪  

Lever demonstrator

作　　者：刘信生 周江 陶士金 LIU Xin-sheng;ZHOU Jiang;TAO Shi-jin(Junior High School of Longqiao Town, Lujiang 231551, China;Chenbu Junior High School of Ketan Town, Lujiang 231551, China;Hefei Educational Science Research Institute, Hefei 230071, China)

机构地区：[1]庐江县龙桥镇初级中学,安徽庐江231551 [2]庐江县柯坦镇陈埠初级中学,安徽庐江231500 [3]合肥市教育科学研究院,安徽合肥230071

出　　处：《物理实验》2021年第2期60-62,共3页Physics Experimentation

摘　　要：通过自制刻度板和亚克力支架,利用定滑轮改变拉力方向,自制直接读力臂的杠杆演示仪,探究了杠杆平衡条件.The scale plate and acrylic stand were made,and the direction of tension was changed by a fixed pulley.A self-made lever demonstrator with direct reading arm of force was designed.The law of lever was explored using this self-made lever demonstrator.

关 键 词：杠杆 杠杆平衡原理 力臂 

分 类 号：G633.7[文化科学—教育学]