A steel [E = 200 GPa] bar (1) supports beam AB. The cross-sectional area of the bar is 540 mm?. If the stress in the bar must not exceed 450 MPa and the maximum deformation in the bar must not exceed 20 mm, determine the maximum load P that may be supported by this structure. Use dimensions of a = 4 m, b = 2.4 m, and c = 5.2 m. (1) B' A a Answer: P = i kN

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Properties of materials

A property of a material describes its characteristics and distinguishes it from the others. The material properties are described it in terms of its hardness, color, appearances, and so on. The material properties generally depend on the type of material, or whether it is a metal or an alloy. There are different kinds of material properties such as mechanical properties, thermal properties, physical properties, and chemical properties. Chemical properties describe the material in terms of a chemical change. The mechanical properties come into existence when the material is acted upon by an external load. Thermal properties are associated with the temperature of the material and specific heat.