Procedure I Data Collection - Ruler Data Table 1 Measurements with a ruler Friction Block Trial 1 Trial 2 Trial 3 Trial 4 Average length in cm width in cm height in cm Volume (cm 3) V =1*w*h Mass Marble Trial 1 Trial 2 Trial 3 Trial 4 Average Diameter in cm Mean radius in cm Radius = Diameter/2 Volume (cm 3) 4/3 It (143) Mass Cylinder Trial 1 Trial 2 Trial 3 Trial 4 Average Diameter in cm Radius in cm Radius = Diameter/2 Height Volume (cm^3) V= (r 2)h Mass Data Analysis Table 2 Density Calculations Using a Ruler Accepted Percent Mass Volume Density Material density Error Friction Block Marble Cylinder Procedure II Measurements with the Vernier Caliper Part 1: Data Table 3 Vernier Caliper Smallest Main Scale Interval "S" (in mm) Number of divisions on the Vernier Scale "N" Least count (LC) = S/N (mm) Zero Error (ZE) (mm) Part 2: Data Table 4 Measurements with the Vernier Caliper Friction Block length Trial 1 Trial 2 Trial 3 Trial 4 main scale (MS) Vernier scale (VS) D=MS + VS- ZE Mean length in mm Convert to cm Friction Block width Trial 1 Trial 2 Trial 3 Trial 4 main scale (MS) Vernier scale (VS) D=MS + VS- ZE Mean width in mm Convert to cm Friction Block height Trial 1 Trial 2 Trial 3 Trial 4 main scale (MS) Vernier scale (VS) D=MS + VS- ZE Mean height in mm Convert to cm Volume (cm43) V =1* w *h