A uniform, flexible and frictionless chain falling link by link from a heap by the edge of a table falls with an acceleration g/3 if the motion is nonconservative, but g/2 if the motion is conservative, g being the acceleration due to gravity. Unable to construct such a falling chain, we use instead higher-dimensional versions of it. A home camcorder is used to measure the fall of a three-dimensional version called an "xyz"-slider. After frictional effects are corrected for, its vertical falling acceleration is found to be a[subscript x]/g = 0.328 plus or minus 0.004. This result agrees with the theoretical value of a[subscript x]/g = 1/3 for an ideal energy-conserving "xyz"-slider. (Contains 3 footnotes, 1 table, and 4 figures.)