Force , Resultant Force, Magnitude & Direction

[BaLTHEBEAST]

Figure 1a shows a system of forces is pulled an object on different directions.

1a) Determine the magnitude and direction of the resultant force for the system of forces shown.


1b) Explain the changes of magnitude and direction of resultant force for the system of forces based on the data in Table 1. Show your changes for each force F2 and F1 .

http://img832.imageshack.us/i/scan0023z.jpg/

That link is the picture for Table 1 and Figure 1a.

Please help. I appreciate your help! Advanced thanks from me!

 

[xiaoB]

http://img832.imageshack.us/i/scan0023z.jpg/

For easy,

(1)First find up the degree respect for horizontal-x.

(2)Find the components-xy for each forces:

(i)R_x=∑F_x=F₄cos(90-42)+F₃cos(35)+...
(ii)R_y=∑F_y=F₄sin(90-42)+F₃sin(35)+...

(3)Finally, find the resultant R=√(R_x²+R_y²)

And sketch the diagram for resultant R to find up its angle:

tanθ=R_x/R_y