3 Experiment of Hooke's law.pdf
4 String in serie and in paralle .pdf
2.1 Elastic potential energy.pdf
5 Point in force-extension graph.pdf
5.1 Material Brittle, ductile and polymetric.pdf
7 Stress strain and youngs' modulues .pdf
8 Size impact to young's modulues.pdf
5.2 Force involving material formation（Metallic, Ionic, Covalent, Intermolecular）.pdf
9.2 Unloading material.pdf
9.1 Material property.pdf
10 Key terms list of material.pdf
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