Tlng bantu makasi beserta caranya

F2x = F2 cos a
F2x = 100 - cos 60°
F2x = 100 . -1/2
F2x = -50 N

F2y = F2 sin a
F2y = 100 sin 60
F2y = 100 . 1/2 √3
F2y = 50√3 N

F3x = F3 cos a
F3x = 100 - cos 60
F3x = 100 . - 1/2
F3x = -50 N

F3y = F3 sin a
F3y = 100 - sin 60
F3y = 100 .- 1/2 √3
F3y = -50√3 N

Fx = F1 + F2x + F3x
Fx = 50 - 50 - 50
Fx = - 50 N

Fy = F2y + F3y
Fy = 50√3 - 50√3
Fy = 0

F = √Fx² + Fy²
F = √-50² + 0²
F = √2500
F = 50 N

jawaban : b