Resolução
-20 . 2 - 8 . 3 . 5,5 + Rb . 7= 0
Rb = 24,57 KN
Ra + 24,57 - 20 - 8 .3 = 0
Ra = 19,43 KN
Cg = 80 mm
Ix = 5333333,34 mm4
∑Ma = 0
-20 . 2 - 8. 3 . (4+ 1,5) + Rb . 7 = 0
Rb = 24,57 KN
∑Fy = 0
Ra + 24,57 - 20 - 8 . 3 = 0
Ra = 19,43 KN
Msx = 80 . 20 . 40 = 6400 mm³

