4. Two thin rods, one made of steel and the other of aluminium, are joined end to end. Each rod is 2.0 m long and has cross-sectional area 9.1 mm2. If a 10,000-N tensile force is applied at each end of the combination, find: (a) stress in each rod; (b) strain in each rod; and, (c) elongation of each rod.

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Chapter12: Static Equilibrium And Elasticity
Section: Chapter Questions
Problem 73AP: Two thin rods, one made of steel and the other of aluminium, are joined end to end. Each rod is 2.0m...
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4. Two thin rods, one made of steel and the other of aluminium, are joined end to end.
Each rod is 2.0 m long and has cross-sectional area 9.1 mm2. If a 10,000-N tensile
force is applied at each end of the combination, find: (a) stress in each rod; (b) strain
in each rod; and, (c) elongation of cach rod.
5. What is the difference between stiffness and strength?
6. The image below is a finite element analysis (FEA) of a beam subjected to a loading.
The beam's response to the loading is a deflection resulting from internal bending and
shear stress. If the internal stresses exceed the yield strength of the beam's material,
how to obtain stiffer materials?
Transcribed Image Text:4. Two thin rods, one made of steel and the other of aluminium, are joined end to end. Each rod is 2.0 m long and has cross-sectional area 9.1 mm2. If a 10,000-N tensile force is applied at each end of the combination, find: (a) stress in each rod; (b) strain in each rod; and, (c) elongation of cach rod. 5. What is the difference between stiffness and strength? 6. The image below is a finite element analysis (FEA) of a beam subjected to a loading. The beam's response to the loading is a deflection resulting from internal bending and shear stress. If the internal stresses exceed the yield strength of the beam's material, how to obtain stiffer materials?
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