横卧式杨氏模量与组装台秤实验仪的设计

2021 , Vol. 40 >Issue 4: 15 - 18

物理实验

横卧式杨氏模量与组装台秤实验仪的设计

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李成龙( 1976—) ，男，安徽天长人，安徽理工大学力物学院高级实验师，硕士，从事基础物理实验教学与实验技术研究工作.

收稿日期: 2020-01-13

修回日期: 2020-08-19

网络出版日期: 2021-04-21

基金资助

安徽省省级质量工程项目( 2017jyxm0184) 资助

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Design of a horizontal Young's modulus instrument and assembling a platform scale

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College of Mechanics and Photoelectric Physics，Anhui University of Science and Technology，Huainan，Anhui 232001，China

Received date: 2020-01-13

Revised date: 2020-08-19

Online published: 2021-04-21

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通过对横向放置的钢丝进行受力分析，推导出其杨氏模量的测量公式，进而运用该公式对其杨氏模量进行实验测

量. 再用该杨氏模量值作为已知参数，利用该钢丝作为压力的应变传感器件，反向设计出一款简易台秤，推导出其测量公式，

并用来测定未知物体的重力. 此设计将传统的验证性实验项目拓展改进成设计性实验项目，减小了原实验误差，丰富了实验内容.

关键词： 杨氏模量; 读数显微镜; 台秤

李成龙, 常芳锦, 寿化杰, 沈祺凯 . 横卧式杨氏模量与组装台秤实验仪的设计[J]. 大学物理, 2021 , 40(4) : 15 -18 . DOI: 10. 16854 /j. cnki. 1000-0712. 200015

Based on the stress analysis of steel wires placed horizontally，the measuring formula

of the young's modulus is derived，and then it is measured experimentally. Using the value of

young's modulus as a known parame- ter and steel wire as a strain sensor of the pressure，a simple

platform scale is designed and its measuring formula is derived to measure the gravity of unknown

object. Such a design makes the traditional confirmatory experiment im- prove to a designing

experiment，reduces the experimental error and also enriches the experiment contents.

Key words： young's modulus; reading microscope; platform scale

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