Question

Four forces are acting on an object. Force 1 has a magnitude of 5N at an angle of 70° above the +x-axis; force 2 has a magnitude of 8N at an angle of 35° above the +x-axis; force 3 has a magnitude of 4N at an angle of 20° above the -x-axis; force 4 has a magnitude of 7N at an angle of 25° to the left of the -y-axis. Find the magnitude and direction of the
resultant of these four forces.

This is my work:
V1: 1.7 (x) 4.7(y)
V2: 6.5 (x) 4.5 (y)
V3: -3.8 (x) 1.4 (y)
V4: -6.3 (x) 2.9 (y)
R: -1.9 (x) 13.5 (y)

tan-1(13.5/-1.9) = -81.9

I really don't understand this question!

Answer 1

See current post: Sat, 10-11-14, 11:51AM