... which have an uncertainty of ?0.002 cm. Black Polymer* Clear Polymer* White Polymer* Metal #1* Metal #2* Length 5.09?0.01 7.30?0.01 7.30?0.01 8.20?0.01 9.30?0.01 Width 1.003?0.002 1.003?0.002 1.003?0.002 2.102?0.002 2.102?0.002 Thickness 0.305?0.002 0.305?0.002 0.305?0.002 0.050?0.002 0.050?0.002 Observation Matte finish, very hard Translucent, light weight, Opaque, relatively soft, easily deformable Shiny, grains oriented horizontally, easily deformable Shiny, grains oriented horizontally, easily deformable * All measurements are in centimeters Table 1: Initial measurements and observations There were several properties of the materials that may have contributed to errors in this experiment. Metals #1 and #2 were both very soft. Therefore, tightening the clamps with too much force could cause the deformation at the ends of the sample. Since the volume of the sample must be consistent, this would cause a parallel deformation in the remainder of the sample, potentially affecting the results of the experiments. Additionally, the deformation in the ends of the metal sample could allow it to slip in the clamps. The measurements at the point of slippage would be affected, cause spikes in the subsequent stress-strain curve. The black polymer ...

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