For the cross section shown, Analyze by using the concepts of shear stress, shear flow and shear center in thin walled open section beams: (a) draw the shear stress diagram and determine shear flow values due to the vertical shear force V; and (b) Calculate the distance e locating the shear center 0. Assume that the thickness of the section is constant which is t= 2.5mm. Note: The thickness t is very small as compared to the other dimensions; therefore consider center-line dimensions for the calculations as mentioned in the figure. - 80 mm V= [1500 +(100×R)] N NA 200 mm 2.5 mm

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Unit Conversion

Standard units are also called SI units. SI units are used for measuring a physical quantity satisfying certain conditions. There are two types of units: fundamental units and derived units. Fundamental units are physical quantities that are independent, that is, they do not depend on other quantities like mass, length, or time. There are plenty of quantities in our lives which need to be measured and compared. Measuring is the comparison of a particular physical quantity with its reference value. A unit is a measure of a fixed physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.