Two bars are connected with a welded butt joint as shown. The bar dimensions are $b=100mm$ and $t=25mm,$ and the angle of the weld is $a=30.$ The bars transmit a force of $P=239kN.$ What is the magnitude of the average shear stress that acts on plane $AB?$

Part $1$

Cut a cross$-$section along the weld and draw a free body diagram. Calculate the cross$-$sectional area $A_n$ and the shear force V $.$

Answer:

$A_n=,m{m}^2$

$V=,kN$