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## 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?