Contour plots of the different forces acting in the final equilibrium state in the x = 0 plane, for the same experiment as in Fig. 2. Showing, from left to right, the magnitude of the pressure force ( −  | ∇p | ), of the Lorentz force and of the total force. Values are normalised to the maximum force of the initial state. It can be observed that the pressure and Lorentz forces balance each other and create a non-force-free equilibrium.