Given the beam shown below, determine the shear foroe and bending moment at point c. given the dimensions a 2.6 m, b 6.8 m and c 2 m, and the load intensites e= 11.5 knm and f 4 kn/m e knm fnm am cm a shear force (observe the up on the left, down on the right posithve sign convention) sfc number units (tolerance 0.2 kn bending moment (observe the sagging positive sign convention) bmc number units (tolerance 1 kn'm) determine the intemal forces at point j for the structure shown, where member bd can only cary axial forces. take the dimension a 178 mm and the external load p 450 n. a mm 225 mm j b t 120 mm 225 mm a p nv 135 mm axial force f number units (tolerance 1 n. magnitude only) thear force sf, number units nolerance 1 n magnitude only bending moment bm, number unts polerance 100 nmm magnitude only)