1. Displace the mass to the side by about 30 degrees and let the mass swing . The mass moves from one extreme point , through the center , to the extreme point on the other side and then back to the starting point . Watch the repetitive pattern and figure out what you would define as one cycle . (There is more than one configuration that can be considered a cycle .) Q1 . What will you consider to be a cycle - describe where the mass starts and where the motion finishes 2. Click on "Period Trace" to see a path that is one complete cycle . (There are more convenient paths that make up a cycle .) Q2 . As you watch the pendulum oscillate , consider what factors might affect the oscillations List three possible factors : 3. Set the mass into oscillations and practice finding the time taken for 3 oscillations using the stopwatch 4. Once you are comfortable measuring the time for oscillations , start finding the time taken for Soscillations by changing the angle through which it is displaced . Do this twice for each angle of displacement and then take the average . The period is the time taken for once cycle , so divide the average value by 10 to get the period in the last data column . DO NOT CHANGE ANY OTHER PARAMETERS. Pendulum length = 0.7m. Note : t average = (t, _ t, ) / 2 Table 1. Period measured by varying angle Angle Time for 5 oscillations Period T (1/s) (degrees ) t, (s ) to (s ) t average (5) 15 30