For the beam shown, find the reactions at the supports and plot the shear-force and bending- moment diagrams. Label the diagrams properly and provide values at all key points. 1300 900 B SKN 300 Problem 3-5 Dimensions in millimeters 12KN 12m 1m A B Problem 3-7 Im 500 lbf 40 lb in 8 in 6 in 6 in Problem 3-6 Hinge 40 lbin 400 C 4 in 4 in 2 in 10 in Problem 3-8