How to Determine the Original Length of a Steel Violin String Under Tension?

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To determine the original length of a steel violin string under tension, the problem requires calculating the string's elongation without using Young's modulus. The tension in the string is 83N, and its length under tension is 35cm. The cross-sectional area is provided as 0.2*10^-6 m^2. The discussion highlights the challenge of solving the problem without the modulus value, which is essential for calculating elongation. Ultimately, the original length cannot be accurately determined with the given constraints.
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Hi I have a problem with the following question:

A steel violin string has a cross-sectional area of 0.2*10^-6 m^2 and is under tension 83N. If its length under tension is 35cm, find its original length.

I can not seem to solve the question without needing the value of young modulus...
 
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That's correct, so look up Young's modulus for steel, the given material. It varies a bit amongst different grades of steels, but not by much.
 
Hi :)

I am supposed to find it using only the given information. Therefore I can not use Young's Modulus.
 
Topic about reference frames, center of rotation, postion of origin etc Comoving ref. frame is frame that is attached to moving object, does that mean, in that frame translation and rotation of object is zero, because origin and axes(x,y,z) are fixed to object? Is it same if you place origin of frame at object center of mass or at object tail? What type of comoving frame exist? What is lab frame? If we talk about center of rotation do we always need to specified from what frame we observe?

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