1.7.1: Errors in Measurement Lecture Demonstrations

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Re-do calculation of density of bowling ball done earlier paying more attention to accurate measurement of diameter, and correct precision of measurements and calculated results.

Measure diameter precisely with large caliper (or bar on ring stand lowered to top of ball).

Care with propagation of errors gives:

D = 5.44 x 10³ g / 5.58 x 10³ cm³ = 0.974910394 g/cm³

Contributors

Ed Vitz (Kutztown University), John W. Moore (UW-Madison), Justin Shorb (Hope College), Xavier Prat-Resina (University of Minnesota Rochester), Tim Wendorff, and Adam Hahn.

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