Measurement of the cord diameter and Young's modulus by standing wave

DONG Yong, ZHANG Jie

doi:10.16854 /j.cnki.1000-0712.190534

College Physics >

2020 , Vol. 39 >Issue 11: 36 - 38

DOI: https://doi.org/10.16854 /j.cnki.1000-0712.190534

Measurement of the cord diameter and Young's modulus by standing wave

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1. School of Physics and Electronics，Hunan Normal University，Changsha，Hunan 410081，China; 2. School of information science and engineering，Hunan University of Chinese Medicine，Changsha，Hunan 410208，China

Received date: 2019-11-20

Revised date: 2020-03-10

Online published: 2020-11-16

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Abstract

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

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DONG Yong, ZHANG Jie . Measurement of the cord diameter and Young's modulus by standing wave[J]. College Physics, 2020 , 39(11) : 36 -38 . DOI: 10.16854 /j.cnki.1000-0712.190534

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