R fine the Mornae shaaess Point A 4 t te Gooo k V20 Solutio

R fine the Mornae shaaess Point A 4 t te Gooo k. V-20 \',

Solution

Since the section is symmetric, the neutral axis is at mid-depth of the section

moment of inertia of the section about neutral axis is calculated using parallel axes theorem:

I=0.75*14³/12 + 2*(12*1³/12 + 12*1*7.5²)=1523.5 in⁴

bending moment acting =M= 6000 kip-in

distnace of point A from neutral axis=y=8\"

Bending stress at A =My/I= 6000*8/1523.5 = 31.5 ksi

since point A is at free surface, shear stress due to shear force will be zero