Question

Pls bantu jawab ya kaaa

Answer 1

Positif: kanan dan atasnegatif: kiri dan bawah
F1 = 40 NF1x = 40 cos 30 = 40 x 1/2√3 = 20√3 NF1y = 40 sin 30 = 40 x 1/2 = 20 N
F2 = F2y = 30 N
F3 = 40 NF3x = 40 cos 30 = 40 x 1/2√3 = 20√3 NF3y = 40 sin 30 = 40 x 1/2 = 20 N
F4 = 40 NF4x = 40 cos 30 = 40 x 1/2√3 = 20√3 NF4y = 40 sin 30 = 40 x 1/2 = 20 N
F5 = F5y = 60 N

∑Fx = F1x - F3x - F4x = 20√3 - 20√3 - 20√3 = - 20√3 N∑Fy = F1y + F2y + F3y - F4y - F5y = 20 + 30 + 20 - 20 - 60 = -10 N
F² = Fx² + Fy²
F² = (-20√3)² + (-10)²
F² = 1200 + 100
F² = 1300F = √1300 = 10√13 N

tan α = ∑Fy/∑Fx
tan α = -10/-20√3tan α = 1/2√3
tan α = √3/6
α = arc tan √3/6