Acceleration due to gravity using pendulum

Studying the oscillations of a pendulum is part of any elementary physics course. Since the time period of a pendulum is a function of acceleration due to gravity, one can calculate g by doing a pendulum experiment. The accuracy of the result depends mainly on how accurate we can measure the period T of the pendulum. Let us explore the pendulum using phoenix. A rod pendulum is very easy to fabricate. We took a cylindrical rod and fixed a knife edge at one end of it to make a T shaped structure. This experiment can be done using the GUI shown below or the Python program 'rodpend.py'