Question

Three horizontal forces are pulling on a ring at rest. f1 is 6.25 N at 180 degree angle and f2 is 8.90 N at a 243 degree angle direction. What is the y component of F3

Answer 1

add up F1 and F2 using x-y components
Since the three forces balance,
F3_{_y} = -(F1+F2)_{_y}