- #1

- 30

- 5

## Homework Statement

## Homework Equations

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stress = force/area

strain = extension/original length

Young modulus= stress/strain

## The Attempt at a Solution

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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.