Using the Arduino with LabVIEW on Moment of Inertia experiment

In this paper,the physical nature of moment of inertia is examined using pulleys, strings, a mass holder and a set of masses for the classical experiment. Another modern experiment is computer-based control to interface Arduino Uno R3 using LabVIEW. The DIY photogate is made with 30mA@5V laser and light diode resistance (LDR) that has two different intensities of light (low and high) as two logical states to measure time interval. An acrylic support is placed on a 12V high torque DC motor. The speed of the motor is controlled by a potentiometer. In the experiment, an aluminum sheet and a cylindrical steel pipe are used as testing objects. The result shows that the moment of inertia of aluminium disk and cylindrical steel pipe (central axis) are 0.000432 and 0.000083 kg·m². The percentage of error between the theoretical and experimental values for the aluminium disk and cylindrical steel pipe (central axis) are 12.90 and 15.31%, respectively. (paper)