摘要
杨氏模量的测定是物理学中的一个重要实验，普物实验中是采用拉伸法测得；本文提出利用自由杆的耦合振动来求物体的杨氏模量。
The test of Yang's module is an important experiment in physics. Genera experiment has been made by tensile test. But here we can get Yang's module of subjects by coupled vibration of free pole.
