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203. During a stress-strain test, the unit deformation at a stress of 5000 psi Wap UDserved to be 0.000167 in./in. and at a stress of 20,000 psi it was 0.000667 in./in. If the proportional limit is 30,000 psi, what is the modulus of elasticity? What is the stress corresponding to a strain of 0.0002 in./in.? Would these re- sults be valid if the proportional limit were 18,000 psi? Explain. Ans. E = 30 X 106 psi; S 6000 psi %3D %3D

203. During a stress-strain test, the unit deformation at a stress of 5000 psi Wap UDserved to be 0.000167 in./in. and at a stress of 20,000 psi it was 0.000667 in./in. If the proportional limit is 30,000 psi, what is the modulus of elasticity? What is the stress corresponding to a strain of 0.0002 in./in.? Would these re- sults be valid if the proportional limit were 18,000 psi? Explain. Ans. E = 30 X 106 psi; S 6000 psi %3D %3D

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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PROBLEMS 203. During a stress-strain test, the unit deformation at a stress of 5000 psi wap ODserved to be 0.000167 in./in. and at a stress of 20,000 psi it was 0.000667 in./in. If the proportional limit is 30,000 psi, what is the modulus of elasticity? What is the stress corresponding to a strain of 0.0002 in./in.? Would these re- Bults be valid if the proportional limit were 18,000 psi? Explain. Ans. E = 30 X 106 psi; S = 6000 psi Ou00 4 ond weight W is sus-
Transcribed Image Text:PROBLEMS 203. During a stress-strain test, the unit deformation at a stress of 5000 psi wap ODserved to be 0.000167 in./in. and at a stress of 20,000 psi it was 0.000667 in./in. If the proportional limit is 30,000 psi, what is the modulus of elasticity? What is the stress corresponding to a strain of 0.0002 in./in.? Would these re- Bults be valid if the proportional limit were 18,000 psi? Explain. Ans. E = 30 X 106 psi; S = 6000 psi Ou00 4 ond weight W is sus-
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