Structural Analysis | Frames and Machines | Hibbeler Statics | Engineers Academy

[@PadmaMonger]

sir, how do we know the directions of the support reaction on the membrane for an instance, the direction for Cx, Cy, Bx, By, and all

[@zuko8023]

You assume initially

[@erfanmohagheghian707]

AB is a two-force member

[@EngineersAcademy2020]

Yes

[@HashemAljifri515]

Your answer is wrong . Member AB is a two force member that should be acting perpendicular to the pulley with an angle of 36.86 above the horizontal .. The you take a moment around point C and the components of the force member AB are Bx and By. You shouldve kept that into consideration instesd of just cutting the beam randomly and solve for one force and ignoring the link between other joints ....