Magnetic drag in the quasi‐static limit: Experimental data and analysis

Experimental details concerning measurements of the deceleration of Al and Cu disks rotating under the influence of a localized, nonuniform magnetic field are discussed. For a specified magnetic field distribution, the deceleration of the disk is measured as a function of radial location of the field from the rotation axis and the magnetic drag coefficient at each point is calculated. The measured values of the drag coefficients are compared to theoretical predictions and excellent agreement is obtained.