Consider the constant thickness $(2$ mm$)80$ mm x $40$ mm offset$-$I section shown in figure below, with an applied vertical shear force Sy$=10$kN through the shear centre.$($a$)$ Determine the shear flow in the horizontal flange ABC and hence the shear stress values at the point B$.$ Note: work your way in from the ends $($A and C$)$ of the flange towards the web intersection B$,$ there will be two values of shear stress at B$,$ one for just to right of junction and another for just to left of junction. $(8)($b$)$ What is the net horizontal shear force in the segments AB and BC $($indicate value and direction as $+$x or $-$x$)(4)($c$)$ From $($b$),$ what is the net horizontal force on ABC? How can this be non$-$zero thoughthere is no Sx applied?$(4)$ AByC $801030$x