source:British physics olymp. 1995 a small slab of material is placed on a dish containing liquid nitrogen.The material is a superconductor at the temperature of liquid nitrogen.A small but strong magnet is moved near and placed over the slab.The magnet is seen to wobble but remains suspended over the slab. describe the motion of the magnet qualitatively(if possible derive an equation of motion by assuming standard constants like temperature,mass,gravity etc.) suggest the reason for the wobbling motion of the magnet. Can anyone suggest me links on the web for: 1. national phy. olymp. papers of different countries? 2.study matter on the concepts and the application method in context of the above problem?