1) The bar has a square cross section with side length of 200 mm. a) Determine the normal stress at the middle of segment AB b) Determine the maximum stress in the bar. 20 cm Im 30 cm 2m 2) Determine the diameter of cable AF if the stress in the cable is 95 MPa. 2m 40 cm 74 40 250 KN 9-36 300 KN 200 KN P-200 KN