Measurement of Rotational Inertia (Ring and （测量转动惯量(环和）.pdf

International Journal Of Applied Science And Technology Vol. 2 No. 2; February 2012 Measurement of Rotational Inertia (Ring and Disc) with High Percentage Accuracy Using Rotary Motion Sensor and Three Step Pulley Hamza Zafar Physics Faculty Department of Sciences and Humanities National University of Computer and Emerging Sciences Faisal Town, Lahore Pakistan. Dr. Syed Karrar Haider Assistant Professor National University of Computer and Emerging Sciences (FAST) B-Block,Faisal Town,Lahore, Pakistan. Abstract This paper describes the experimental work to measure the Rotational Inertia using a Rotary motion sensor and a three step pulley, and analysis with data acquisition software. The result of this experiment provides high percentage accuracy in the measureme nt of Rotational Inertia; importance of sensors to analyze the Angular acceleration and Rotational Inertia in order to obtain accurate measurements. Key Words: Rotational Inertia, Rotary Motion Sensor, Interface-500, Data Acquisition Software and Percentage Error. 1. Introduction The conventional way to measure the rotational inertia of a ring and a disk is that we have slide the ring and disc from the top of the sliding surface and then find the rotational inertias towards the difficulty in the execuation and also the exact estimation of time period in the rotational Inertia formula. The traditional approach is difficult to execute and data is rarely sufficient