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 kgm2. 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.