V = 1.9 (slider from 0 to 3, step 0.1)
A = (-3.5, 0)
O = Point(yAxis)
B = (-6.5, 0)
C_1 = (-0.5, 0)
a_1 = Segment(B, C_1)
D = (-3.5, 3)
E = (-3.5, -3)
c = Circle(A, V)
b = Segment(D, E)
t = 0.0397 (slider from 0 to 0.04, step 1.0E-4)
fréq = 50 (slider from 0 to 100, step 5)
ω: 2 * π * fréq
θ: ω * t
F = Point(c)
F' = Rotate(F, θ, A)
v1 = Vector(A, F')
q = Function(V * sin(x), 0, θ)
n1 = Function(V * sin(θ), x(F'), Infinity)
r = Function(V * sin(x - 2 * π / 3), 0, θ)
s = Function(V * sin(x + 2 * π / 3), 0, θ)
v2 = Rotate(v1, -2.0943951023931953, A)
v3 = Rotate(v1, 2.0943951023931953, A)
F'' = Rotate(F', 240*°, A)
F''_1 = Rotate(F', 120*°, A)
n2 = Function(V * sin(θ - 2 * π / 3), x(F''), Infinity)
n3 = Function(V * sin(θ + 2 * π / 3), x(F''_1), Infinity)