2. If \( P=9 \mathrm{kN} \), determine (20 PTS)
a) the bending stress at points \( A, B \), and \( C \) of the cross section at section \( a-a \).
Using these results, b) sketch the stress distribution on section \( a-a \).
c) If the maximum bending stress at section \( a-a \) is not allowed to exceed 150 MPa , determine the maximum allowable force P that can be applied to the end E .
