The discussion focuses on solving truss loads, specifically determining reaction loads using given forces and dimensions. The participants reference a truss diagram and equations involving forces p1 (800 lbs) and p2 (600 lbs) with a distance 'a' of 8 units. Key equations include the moment equation (sum Ma=0) and the conditions for equilibrium, leading to the conclusion that Cx is zero due to the roller support configuration. The solution involves calculating Cy first, followed by Ax and Ay using the sum of forces in both x and y directions.
PREREQUISITESEngineering students, structural analysts, and anyone preparing for exams in statics or mechanics of materials will benefit from this discussion.
You've got it right. From your equation, you can solve for Cy. Then use sum of forces in x direction = 0, and sum of forces in y direction = 0, to solve for Ax and Ay. Note that Cx must be zero, since it is a roller support that is free to slide in the x direction, and thus, can support no load in that direction.jellybellybea said:Homework Statement
http://i277.photobucket.com/albums/kk63/sarcasticlil123/truss.jpg
Homework Equations
p1=800#, p2= 600# and a=8, determine a reaction load
The Attempt at a Solution
sum Ma=0=-4.5p1-6p2+12.5cy
I am generally lost, this isn't homework its practice for the final exam. Could someone help?