Summary

For the measurement of the gravitational acceleration  g  in our location, we decided to use a classic method suited to contemporary measurement tools and data acquisition process . Thus, we chose the oscillation (for small amplitude  θ ) of a simple pendulum . For 4 different lengths of the string, the relevant periods were recorded.  In order to  record 2 successive times (t₁ and t₂) of  passing from its equilibrium position, we used a photogate connected with a data logger (MultiLogPRO of Fourier Systems). Then, we analyse the data on Microsoft Excel,  and produced a xy (scatter) graph . A first order linear fit was performed on the data. The value of the slope corresponded to the constant value of the gravitational acceleration. The value g found g=9,77 m/s2  ,  and is very close to the value we expected  from theory.

More details about our experiment you can find in this file and  and the attached video