Temporal evolution of the velocity of the thread given by Eq. (35) normalized to the initial velocity U₀ as function of time, t. We have assumed a typical situation of ζ = 100, r = 60 Mm, with g = 274 m s^-2. For clarity, we have split the different cases studied into two panels. In a) a thread with l_p = 2.1 Mm and θ = 1° is considered with v = 10 km s^-1 (black curve) and v = 30 km s^-1 (orange curve). In b) a thread with l_p = 5 Mm and θ = 3° is considered with v = 10 km s^-1 (red curve) and v = 30 km s^-1 (blue curve).