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Spiral
on 11 Oct 2021
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t = 1:5000;
u = .0265;
r0 = 20;
r = r0 +u*t;
om = .005;
phi0 = 3*pi/2;
phi = -om*t+phi0;
x = r .* cos(phi);
y = r .* sin(phi);
plot(x,y, "red",'LineWidth',5)
grid on;