利用驻波测量弦线的直径及其杨氏模量
收稿日期: 2019-11-20
修回日期: 2020-03-10
网络出版日期: 2020-11-16
Measurement of the cord diameter and Young's modulus by standing wave
Received date: 2019-11-20
Revised date: 2020-03-10
Online published: 2020-11-16
董勇, 张洁 . 利用驻波测量弦线的直径及其杨氏模量[J]. 大学物理, 2020 , 39(11) : 36 -38 . DOI: 10.16854 /j.cnki.1000-0712.190534
An experiment is designed to observe the standing wave on the electrified cord. The density of copper is measured by Hydrostatic weighing method,then the diameter of the cord can also be obtained. The Young's modulus is obtained by measuring the length variation of the cord.
Key words: standing wave; hydrostatic weighing method; Young's modulus
/
| 〈 |
|
〉 |