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VEKTOR• resultan
F₁ = 20 N. α₁ = 30° thd sb X
F₂ = 30 N. α₂ = 120° thd sb X
Ry = __?
Ry = F₁y + F₂y
Ry = F₁ sin α₁ + F₂ sin α₂
Ry = 20 sin 30° + 30 sin 120°
Ry = 20 • ½ + 30 • ½√3
Ry = (10 + 15√3) N