The shear force acting on a beam at an I- section with unequal flanges is 50 kN. The section is shown in Fig. The moment of Inertia of the section about N.A. is 2.849x10⁴ .Calculate the shear stress at the N.A. and also draw the shear stress distribution over the depth of section. 

200 mm 200 mm 50 mm 130 mm 50 mm. 50 mm