The objective is to learn about data collection and analysis, as well as the motion of a pendulum. The square of the period varies directly with the length. It is only dependent on the length of the pendulum and the constant g, which is the acceleration due to gravity on Earth. These results represent a complication of the ideal motion of the pendulum, but must be taken into account by any thorough understanding of the phenomenom. The period is almost independent of the starting amplitude.
Pendulums nearly return to their release heights, however, all pendulums eventually come to rest.
Let's explore these questions for the point of view of an experimentalist. Now go on to Part II of the Lab Experience, where you will watch a short movie of an actual classroom lab pendulum experiment.