Spring Oscillator Experiment using Phyphox

#phyphox #PhiPsyKahl Objective: To demonstrate an experiment using Phyphox to determine the frequency and period of spring oscillator. Description: This experiment uses the accelerometer to measure the oscillator movement and calculates the oscillation period T. Additionally, on the resonance tab, it plots the amplitude against the detected frequency. This way, you can construct a driven oscillator and change its frequency to measure resonance curve. The oscillation period is obtained through the autocorrelation of the sum of all three accelerometer components. The autocorrelation is then analyzed for its first maximum for a first estimate and then the last maximum of the autocorrelation is used to get a more precise result. Requirements and Materials We need the following for this experiment: a Smartphone with PhyPhox app installed, a contraption or phone case bag, an extra device for remote access such as laptop or smart phone with updated web browser to visualized data, a spring scale, and additional weight to counter the restoring force of the spring, where in this experiment I bottle with sufficient amount of water. Methodology 1. Open PhyPhox app and select Spring under Mechanics Section on the experiment options 2. Tap the options on the upper right side of and select “Allow Remote Access”. Copy the URL for the remote access device. 3. Open a web browser in the remote access device and type the URL generated by phyphox. 4. Place the smartphone in Ziplock or any safe phone casing. 5. Hang the weights on the spring. 6. Click the play button on the remote access device 7. Slightly pull down the weights and release it instantly. Data Analysis The result of the experiment determines a period of 0.49 seconds and a frequency of 2.03 hertz. The oscillation period is obtained through the autocorrelation of the sum of all three accelerometer components. The autocorrelation is then analyzed for its first maximum for a first estimate and then the last maximum of the autocorrelation is used to get a more precise result. Conclusion and Generalization Using PhyPhox application you can maximize the built-in sensors on your smartphones and perform experiments with the tip of your fingers. Source: https://phyphox.org/