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The coefficient of linear expansion of iron is .0012 / C(I know this isn't). At what temperature a 21 meters long iron rod(measured at 0C) will exactly fit a case which is 22 meters long?[Neglect the expansion of the case]

I hope you didn't misunderstand me. This isn't a homework. I was attempting some past question from Bangladesh physics Olympiad- bdpho.org Well the answer I got to this problem was approximately 40C. If anybody could please confirm using the co-efficient of linear expansion formula.

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Welcome to Physics! Please see our homework policy. We expect homework problems to have some effort put into them, and deal with conceptual issues. If you edit your question to explain (1) What you have tried, (2) the concept you have trouble with, and (3) your level of understanding, I'll be happy to reopen this. (Flag this message for ♦ attention with a custom message, or reply to me in the comments with @Manishearth to notify me) – Manishearth♦ Jan 18 at 16:06
It doesn't matter if it's homework or not, the type of question is what matters. This one belongs to that type. You haven't read the policy, this is stated in the first section. – Manishearth♦ Jan 18 at 17:29

closed as too localized by Manishearth♦ Jan 18 at 16:07

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