I'm doing a coupled pendula experiment and I'm not too sure on what the results mean and also what to do with the results. The experiment involves a change in height of the spring and testing pendulum In Phase, Out of Phase and Beat Phase.

Height of 0.75m

O X Live voltage read out will freeze while recording data. Channel can not be changed during reading Voltage 0 plotted in black, voltage 1 plotted in red. Current save directory: C:/Users/z5416320/Desktop Select directory 0.05 Voltage 0: Voltage 1: 0.00 Channel: 2-3 Voltage (V) 0.00 V Channel: 0-1 0.00 V -0.05 Preset read duration: 1.0 minutes -0.10 Start 10 20 30 40 50 60 Time (s) Time: 60.01 Data: 14080 Save data 0.06 0.04 Amplitude 0.02 0.00 4 6 10 Frequency (Hz)th 0 X Live voltage read out will freeze while recording data. Channel can not be changed during reading. Voltage 0 plotted in black, voltage 1 plotted in red. Current save directory: C:/Users/z5416320/Desktop Select directory 0.05 Voltage 0: 0.00 0-1 - 0.00 V Channel: Voltage 1: -0.01 V Channel: 2-3- Voltage (V) -0.05 Preset read duration: 1.0 minutes -0.10 Start 0 10 20 30 40 50 60 Time (s) Time: 60.06 Data: 14080 Save data 0.06 - 0.04 Amplitude 0.02 0.00 0 4 6 10 Frequency (Hz)\fth X Live voltage read out will freeze while recording data. Channel can not be changed during reading. Voltage 0 plotted in black, voltage 1 plotted in red. 0.10 Current save directory: C:/Users/z5416320/Desktop Select directory 0.05 Voltage 0: 0.00 Voltage (V) 0.01 V Channel: Voltage 1: 0.01 V Channel: 2-3 -0.05 Preset read duration: 1.0 minutes -0.10 Start 0 10 20 30 40 50 60 Time (s) Time: 60.05 Data: 14080 Save data 0.04 Amplitude 0.02 0.00 - 0 N - 4 6 10 Frequency (Hz)th 0 X Live voltage read out will freeze while recording data. Channel can not be changed during reading. Voltage 0 plotted in black, voltage 1 plotted in red. 0.10 Current save directory: C:/Users/z5416320/Desktop Select directory 0.05 Voltage 0: Voltage 1: 0.00 0-1 - Voltage (V) 0.00 V Channel: 0.00 V Channel: 2-3 - -0.05 Preset read duration: 1.0 minutes -0.10 Start 0 10 20 30 40 50 60 Time (s) Time: 60.04 Data: 14080 Save data 0.08 0.06 Amplitude 0.04 0.02 0.00 0 4 6 10 Frequency (Hz)