Hello Everybody! Er well i'm new to this forum so hi guys! I have a small problem which is made even worse by the fact i know very little about the subject. Ok the problem is about steel ball bearings falling through a liquid. The Situation: A wide cylindrical plastic tube 1.0 to 1.5 m long with a tight fitting bung at one end is filled with a viscous fluid. A steel ball bearing is dropped through the fluid and the time, t, is measured for various distances, s. I did not complete this experiment the results were given to me. The results i have are for three different fluids, sunflower oil, glycerol and syrup. For each liquid there are three sets of results which were taken at different temperatures. In each of the tables there are three results for small, medium and large (i am assuming that they are different sizes of ball bearing) and the results for the viscosity of the liquid in those conditions is given. Also there is a average result. Somehow i have to be able to deduce a displacement-time graph from this information. Any help? i found one equation which is: viscosity=( 2(p)ga^2 )/ 9v where p=difference in densities of fluid and ball, g=graity,v=velocity,a=radius of ball(unknown) but this leaves me as stuck as i was before. Any help would be gratefully appreciated! Cheers Guys P.S. Physics Rock!