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Question: can someone help with b and with explaination you might...

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Can someone help with b and with explaination?

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THE B I FOUND WAS WRONG

A metal rod with a cross sectional area of 400 mm2 and a yield stress of 250 N/mm2 is subjected to a load. a. What is the maximum load that may be applied without getting a plastic deformation? We find the maximum load, 400 mm2 *250 N/mm2- 400 250 N- 100000 N- 100 kN The metal has a E modulus = 67000 N/mm2. b. Calculate the length of the rod when lo 1000mm and a 100KN force is applied? The length of the road is 1492.54 mm when 10 1000mm and the force is 100kN

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