thanks a lot i appreciate the help, i will be posting a problem later 2nite that i need help on even starting, I am dumbfounded, just a tip in the right direction might get me started though =).
In the book they give me Varignon's theorem which is listed as M(o)=Fy(Xa)- Fx(Ya). Using this equation I get
M(a) =17.1(1) - 47(1.73)
M(a) = -64.2lb*ft
M(a) = 64.2 lb*ft clockwise
Thanks link, and thank you everyone else who helped. i understand how to get the answer now, but i don't think i necessarily understand the logic behind it, I can't find an example problem in the book exactly like this one so that leaves me kind of lost.
My attempt at a solution, forgot that part, probably the most important part.
M(A)= Fd
tan40=d/2ft
d= tan40x2ft
d =1.68ft
M(A)=-50lbx1.68ft
M(A)= -84 lb*ft
M(A) = 84 lb*ft clockwise
Homework Statement
Determine the moment of the 50lb force about point A by resolving the force into horizontal and vertical components.
Homework Equations
I am using the book statics and strength of materials 2nd edition by Cheng, and its problem 2-31, i have racked my brain and...