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Question: answer bothe please...

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Answer bothe please
hollow steel column has to carry an axial load of 2000 kN. If the external diameter of the column is 250mm, find the internal diameter. Take the ultimate stress for the steel column to be 480 MPa and allow a factor of safety of 4.0. 3.6. A
3.5. A steel wire has the following properties: Length 3 m; Cross-sectional area 6.25 mm2 Youngs Modulus 200 GPa Shear Modulus 83 GPa Elastic limit 200 MPa Breaking Stress- 400 MPa The wire is fastened at its upper end and hangs vertically a) How great a load can be supported without exceeding he elastic limit? b.) How much will the wire stretch under this load? c.) What is the maximum load that can be supported?
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