Correct Answer: Option A

Explanation

Component of 8N along the horizontal = 8 cos 60^o = 8 x 0.5
= 4N
Similarity Component of 6N along the horizontal = 6 cos 60^o = 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

There is an explanation video available below.

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