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AbdAllahOA
If the resultant force of the shown force system , acting on the cable-post , is directed vertically downward , determine the magnitudes of the force F and the resultant force. http://postimg.org/image/x7995jb2v/
you will need to sum forces in the x-direction and the y-direction, using sin() and cos(), like this: x-direction: 0 = -130*cos(27) + 50*cos(17) + other forces I didn't do y-direction: 0 = -130*sin(27) - 50*sin(17) + other forces I didn't put in does this get you started in the right direction? so finish summing the forces in the x and y direction, i've started it for you, you need to finish the two equations above. once they are finished, you will be able to solve for force F by using algebra in either equation, x or y. |dw:1382502332079:dw|