# Statics forces acting on supports

#### jimbo71

1. The problem statement, all variables and given/known data
see attachement

2. Relevant equations
sum of Fx=0
sum of Fy=0
sum of M=0

3. The attempt at a solution
There are 4 forces that I have found. 12W acting in the negative y direction at A. 3W acting in the negative direction acting 2 feet from pt B. A F acting in the positive y direction from point A and a F acting in the positive direction from point B.
Ay+By-12W-3W=0.
Ay+By=3036lb/ft

Obviously I need a second equation to solve for Ay and By. I'm not sure what other forces I can sum up. I think somehow I want to incorporate a moment force but I don't know what it would be.

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?????

#### tiny-tim

Homework Helper
Hi jimbo71!

I can't see your diagram yet, so I'm only guessing …

but there's probably no "moment force" - you just choose a point, and take moments of all the ordinary forces about that point, and equate it to zero.

"Statics forces acting on supports"

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