Rotational Kinematics/Rolling Motion using Phyphox

@phyphox #phyphox #PhiPsyKahl PhyPhox Roll: Rotational Kinematics/Rolling Motion Objective: To demonstrate rotational motion using smart phone built-in gyroscope. Experiment Description This experiment utilizes the built-in gyroscope on the smartphone and measures the angular velocity measured along the longest side of the phone as well as the radius of the roll to calculate the speed at which the roll travels. Requirements and Materials We need the following for this experiment: a Smartphone with PhyPhox app installed, a device for remote access such as laptop or smart phone with updated web browser to visualized data, a paper roll or any cylindrical tube or container that will fit the smartphone inside and some scratch papers. Pictures/Video of materials Methodology 1. Open PhyPhox app and select Roll on the experiment options 2. Measure the radius of the tube by measuring first the diameter of the cylinder and divide it by 2. Input the value in PhyPhox. Make sure you are using the correct unit during measurement. 3. Tap the options on the upper right side of and select “Allow Remote Access”. Copy the URL for the remote access device. 4. Open a web browser in the remote access device and type the URL generated by phyphox. 5. Place the smartphone in the container and add scratch paper both sides so that phone will not slip during the roll. 6. Click the play button on the remote access device and roll the cylinder to measure speed. Data Analysis When rolled horizontally back and forth the the average speed is 0.68 m/s. When rolled from the incline the average speed is 0.85 m/s. Note that the raw data measures the angular speed with the units rad/s. You can view the link in the description for video Lecture about the computations and interconversion of quantities between rotational and linear kinematics. 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/