The steel bar has the original dimensions shown in the figure. If it is subjected to an axial load of 50 kN, determine the change in its strength in mm at section a-a. Est = 200 GPa, vst = 0.29

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British Gravitational Bg System Of Units

Measuring is the comparison of a particular physical quantity with its reference value. A unit is a fixed physical quantity. The length is a physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.