Question

1. A system of four forces acting on a body is as
shown in figure 1. Determine the resultant force
and its direction.
120N
200N
100N
5ON​

Answer 1

Resultant force along the x-axis:

F

x

=cos60+2cos60−4sin30

=

2

1

+2×

2

1

−4×

2

1

=

2

1

+1−2=−0.5N

Therefore 0.5 N force is required along OX