I'm doing an investigation where I am trying to find the repulsion force of cylindrical magnets. For this I have two ferromagnetic disk magnets on their sides, so that the curved sides face each other. In the investigation I push one of the magnets with a constant force towards a stationary one, and I'm trying to find the magnetic force between them the moment that the moving magnets has 0 velocity before it starts being repelled backwards. I then increase the magnetic field of the stationary magnet and repeat the process. I'm having trouble finding a way to determine this magnetic force. I have magnetic field sensors and can measure the distance between the magnets when v = 0.