gc textbook chapter 11 Vibrations and Waves (id: b4dba64a5)

本题目来源于试卷: gc textbook chapter 11 Vibrations and Waves，类别为 通用国际物理

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An elastic cord is 65 cm long when a wenvpa8k :r.tw,smb ;0yghu g ;5ight of 75 N hangs from it but is qztdn0diu*.7)z-uop ba5 e8 6cnd(kh85 cm long when a weight of 180 N hangs from it. What is the “sprinu80qnpz dnd-6zt b7. )oe(* a5uch dkig” constant k of this elastic cord?    N/m

参考答案: 530±2%


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