|LECTURE DEMONSTRATION MANUAL | Instructional Research Lab : ucla physics|
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M.9.5 Cavendish Balance
The universal gravitational constant G can be measured in class with the Cavendish balance; however, the demonstration is time consuming and delicate. A video tape of the demonstration has been prepared by Prof. C. Buchanan and Jim Abbott using time lapse photography of the optical lever readout. The tape is about seven minutes in duration and presents the students with the data of the experiment so the value of G can be calculated.