Steel train rails are laid in 14.0-m-long segments placed end to end. The rails are laid...

Question

Question

Steel train rails are laid in 14.0-m-long segments placed end to end. The rails are laid on a winter day when their temperature is -5.0 ∘C.

How much space must be left between adjacent rails if they are just to touch on a summer day when their temperature is 33.0 ∘C?

If the rails are originally laid in contact, what is the stress in them on a summer day when their temperature is 33.0 ∘C?

Please answer both questions

Answer 1

Answer #1

Answer 2

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