- #1
Frankenstein19
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Homework Statement
Homework Equations
The Attempt at a Solution
I got the components of each force. I called the Force from BA "B" and the force from CA "C" and then the force going downward on D "W"
FBy=sin30*B
FBx=-cos30*B
FCy=3/5*C
FCx=4/5*C
W=-500
~~~~~~
ΣFx= -B*cos30 + 4/5C = 0
ΣFy= B*sin30 + 3/5C - 500 = 0
-0.866*B +0.8C=0
0.5*B+0.6C=500
Now when I solve the system of equations by elimination I'm getting B=434 and C=470 (I even checked on a calculator) , but the back of the book says 478 for B and 518 for CWhat am I doing wrong?
I know this is kind of a dumb question like it's basic precalc but I've done it so many times over and over again I don't know what I am going wrong