... (a < b) U 12. 10 5.39 kNrn 12. 11 w'= w/4 12. 12 2.49 x lo6 mm4 12. 13 5.61 kN 12. 14 10.086 kN/m 12. 15 75 kN/m 12. 16 e = WL~/(~EI), 6 = WL3/(8EI) 12. 17 P = W(3L/a ... = W(3L/a - 1)/2, d3 12. 19 6 = -7WL3/(6ZcD) 12. 20 Ratio = 1.7 12. 21 5.1 mm 12. 22 50.5 mm, 142 kW 12. 23 4.3 kN, 127 .6 mm 12. 24 352 N, 148 N 12. 25 E, = 500p at 30" ... e,. = ~~~414, b) -36k ds2, 12. 1 193 mm, 0.85 mrn 12. 2 0.231" 12. 3 0.36MN 12. 4 a) 0.100,0.069,0.038,0.006, -0.025, b)0.000, -0.11, -0 .12, -0.11,0.00 a) OB = 28.54...