About movement of a magnetic dipole on a conducting surface

Abstract

Experimentally investigated the motion of small neodymium magnets on an inclined conducting non-ferromagnetic (dural) surface. Time was measured the sliding magnet on an inclined chute with three different slopes. It is established that in the case when the vector of the magnetic moment of the magnet is parallel to the surface, its speed when sliding on a surface perpendicular to the vector of the magnetic moment direction in 2 – 3 times (depending on parameters of the magnet) more speed in the case where the velocity vectors and the magnetic moment are parallel. These movements were able to observe using the guide plate installed on the magnets. If the guide plate is removed, the movement of a magnet over a flat surface in the case of parallel velocity vectors and the magnetic moment is unstable – magnet fast enough (on the way to one, two its characteristic dimensions) spontaneously takes place so that these vectors are perpendicular. When rolling tabletcelebrex a cylindrical magnet, magnetized along the diameter when the base of the cylinder slides over a conductive surface, its rotation is uneven. Relatively rapid rotation is periodically replaced by slow. The free fall in the gravity field (e.g., non-ferromagnetic conducting pipe) magnets are oriented by the magnetic field of the Earth so that it is always fall to its North pole down. The qualitative theoretical estimates to explain the observed effects. The explanation for the difference in the velocity of the magnet at different orientation is based on the assumption of the constancy of the rate of change of the magnetic induction across the surface under the magnet. The explanation of the phenomenon of intermittent motion associated with the motion of the conductor in an inhomogeneous field. Evaluation of the time reversal of the magnet due to the action of the mechanical moment exerted by the magnetic field of the Earth provides approximately 3 s, which is sufficient to make a reversal. Comparison of experimental results with the known theoretical shows the satisfactory consent.