the diagram above shows forces 4N, 6N, 10N and 8N which act at a point O in the directions indicated. the net horizontal force is
Attached Figure / Diagram
A
13N
B
17N
C
√3N
D
7√3N
Verified Correct Answer: A.
Physical Principles & Numerical Solution
Component of 8N along the horizontal = 8 cos 60o = 8 x 0.5
= 4N
Similarity Component of 6N along the horizontal = 6 cos 60o = 3N
∴ Total force towards the right = 10 + 4 + 3
= 17N
Again total force toward the left = 4N
∴ Net horizontal force (towards the right) = 17-4
= 13N
Source: Myschool Past Questions Archive (Record #12896)