Question

hinge 15 kN/m 20 HN o,06X rch 5 +5 5 5 + 10 10 + r Find External Reaction at A, C 本perm me,thwst shear and the moment. at foint D

Please answer all the questions

Answer 1

as the last question has clear details, it is answered.

Draw ABD and apply unit load as shown sigma FY = 0 = D B_y + C_y = 1 sigma M_C = 0 D B_y times 8 = Perpendicular to(12 - x) B_y = 3/2 - x/8 = 12 - x/8 at x = 0, B_y = 3/2 = D C_y = 1 - 3/2 = -1/2 x = 4: B_y = 1 = D C_y = 1 - 1 = 0 x = 12: B_y = D = D C_y = 1 - 0 = Perpendicular to (Moment at B) now, when x < 4, M_B = C_y times 8 x = 0: C_y = 1/2 = D M_B = -1/2 times = -4 x = 4: C_y = 0 = D M_B = 0 times 8 = 0 when x > 4', M_B = 0 (Shear V_CL) V_CL = -C_y so, at x = 0 C_y = -1/2 = D V_CL = 1/2 x = 4, C_y = 0 = D V_CL = 0 x = 12 cC_y = = D V_CL = -1