Statics: Truss Practice Problem 6-8: Method of Joints

[@andreighyt7498]

Wish you could have shown how to get the last two unknowns step by step.

[@engineeringvision]

It is just two equations and two unknowns, you need to find one unknowns as function of the other in one of the equations and then replace that unknowns into the other equations to find your second unknown

[@Tuba4life1]

How did you find Fea and Feb, you never finished those equations

[@ingridlimae]

if you analyse the joint A, you can notice an Y force (as well as on joint B). then, you do: Mo= 6 times YB + 900 times 4 + 600 times 8. YB= -1400 N ΣFY= YA+YB= 0 so YA= 1400N afterwards, we can find the angle of the ABE triangle: 4/3 (half of the base)= 1.333333 1.333= tg 53.13 if Fea= Ya times sin 53.13 then Fea equals 1750N you can find Feb easily after that.