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Verified answer
Vektor- Resultan
F₁ = 2 N
R = 2√3 N
α = 120° ➙ cos α = - ½
F₂ = __ ?
R² = F₁² + F₂² - 2 F₁ F₂ cos α
(2√3)² = 2² + x² - (2 • 2 • x • -½)
12 = 4 + x² + 2x
x² + 2x - 8 = 0
(x + 4)(x - 2) = 0
x = -4 (ditolak) atau x = 2
Nilai x = 2