Three horizontal ropes pull on a large stones stack in the
ground, producing the vector forces A, B & C. Find the
magnitude and direction of a fourth force on the stone that will
make the vector sum of the four forces zero.
A = 100N 30o
North of East
B = 80N 30o
West of North
C = 40N 53o
South of West
Helppppp
If the 4th vector is (x,y) then
x + sum of x-components of A,B,C = 0
y + sum of y-components = 0