Influence of Torque on the Lift and Drag of a Particle in an Oscillatory Flow Paul F. Fischer, 1 Gary K. Leaf, 1 and Juan M. Restrepo *2 1 Mathematics and Computer Science Division Argonne National Laboratory Argonne, IL 60439, U.S.A. 2 Department of Mathematics and Physics Department University of Arizona, Tucson, AZ 85721, U.S.A. April 16, 2008 * Corresponding Author:. restrepo@math.arizona.edu, TEL: (520) 621-4367. 1