stress = force/area
strain = extension/original length
Young modulus= stress/strain
The Attempt at a Solution
Hi i hope you can read my handwriting. I solved task a already but even though i think i solved b correctly, the solution says its wrong. It states that its 45000 J. It could be a mistake in the book because its just off by one zero, but im not sure it could be a mistake in my calculation too. The force and the extension is apparently right according to the solution.
Thank you very much in advance.