Subject: Mechanical engineering. Question: A bar 1.5 m long is made up of two parts of aluminium and steel and that cross sectional area of Aluminum bar is twice that of steel bar. The rod is subjected to an axial tensile load of 200 kN. If the elongation in aluminium and steel bar are equal, find the length of the two parts of the bar. Take E steel 200GPa; E Aluminium one third of E steel.

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Axial Load

When a bar of the uniform cross-section is acted by a load, such that the load acts along the longitudinal axis of the bar, such kinds of loadings are known as axial loadings. In general terms, a load is an external force acting on a component. An axial load acts perpendicular to the geometric cross-section of the component. Based on the direction of the application of the load, an axial load can be tensile or compressive. The analysis of bodies under the action of axial loads is generally studied under the branch of mechanics, known as statics.