- #1

- 1

- 0

## Main Question or Discussion Point

Hi,

I'm doing an IB extended essay in physics (like a 4000 word investigation) and I'm looking to do it on Young's modulus- in particular perhaps how temperature effects it. Is this legit? Like does temperature have a significant effect, in such a way that if young's modulus decreased with temperature then from a stress/strain curve you could see that less stress would be needed to cause the same amount of strain- therefore making things weaker in hotter climates? Really unsure. Also would it make more sense to go down the route of young's modulus and thermal expansion using those formulas, although I do need to carry out an experiment as a part of the investigation so I'm not sure what I'd do for that. I was thinking of an experiment use Searle's apparatus if the school has it or just clamping a steel wire to a desk with a pulley and weight to measure stress/strain then draw a graph to get a gradient of young's modulus. Also, I wanna link this experiment to the real world as i'm interested in construction- in particular I can see this being relevant to bridges- so if I got young's modulus experimentally from a steel wire it can be applied to a massive steel rod used to build things too right? (Just checking)(We haven't actually been taught any of this which is why some bits are confusing me a bit)

And help/more ideas would be massively welcomed,

Thanks! :]

I'm doing an IB extended essay in physics (like a 4000 word investigation) and I'm looking to do it on Young's modulus- in particular perhaps how temperature effects it. Is this legit? Like does temperature have a significant effect, in such a way that if young's modulus decreased with temperature then from a stress/strain curve you could see that less stress would be needed to cause the same amount of strain- therefore making things weaker in hotter climates? Really unsure. Also would it make more sense to go down the route of young's modulus and thermal expansion using those formulas, although I do need to carry out an experiment as a part of the investigation so I'm not sure what I'd do for that. I was thinking of an experiment use Searle's apparatus if the school has it or just clamping a steel wire to a desk with a pulley and weight to measure stress/strain then draw a graph to get a gradient of young's modulus. Also, I wanna link this experiment to the real world as i'm interested in construction- in particular I can see this being relevant to bridges- so if I got young's modulus experimentally from a steel wire it can be applied to a massive steel rod used to build things too right? (Just checking)(We haven't actually been taught any of this which is why some bits are confusing me a bit)

And help/more ideas would be massively welcomed,

Thanks! :]