Question: A square rod, 8 . 0 mm on a side, is made from SAE 1 0 4 0 cold - drawn steel and has a

A square rod, 8.0 mm on a side, is made from SAE1040 cold-drawn steel and has a length of 175 mm.It is placed snugly between two unmoving supportswith no stress in the rod. Then, the temperature isincreased by 90\deg C. What is the final stress in the rod? answer choices: (200 MPa, 199 MPa, 211 MPa, 205MPa)

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