A 20-mm-diameter brass rod has a modulus of elasticity of E = 100 GPa If it is 4 m long and subjected to an axial tensile load of 12 kN, its elongation is ( )
A、1.5279mm;
B、6.1115mm;
C、3.06mm;
D、0.7639mm
发布时间：2025-11-18 12:51:01
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答案：1.5279 mm
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