Posted by Larissa on .
Several forces act on a particle as shown in the figure below (where F1 = 75.0 N, F2 = 65.0 N, θ1 = 25.0° and θ2 = 74.0°, . If the particle is in translational equilibrium, what are the values of F3 (the magnitude of force 3) and θ3 (the angle that force 3 makes with the x axis)?
F1 is 25 degrees West of North
F2 is 74 degrees South of West
F2 is in the direction South of East

physics 
drwls,
F3 is MINUS the vector sum of F1 and F2. I assume you are familiar with the method of adding vectors by adding the x (east) and y (north) components separately.