Rotational Inertia Experiment

SKU: EX-5516B Categories: , Tag:


Product Summary

In this experiment, the rotational inertias of a ring and a disk are determined by applying a torque to the object and measuring the resulting angular acceleration.

A known torque is applied to the pulley on the Rotary Motion Sensor, causing a disk and ring to rotate. The resulting angular acceleration is measured using the slope of a graph of Angular Velocity vs. Time. The rotational inertia of the disk and ring combination is calculated from the torque and the angular acceleration. The procedure is repeated for the disk alone to find the rotational inertias of the ring and disk separately.

PASCO Advantage: Friction can be neglected in this compact setup. The Rotary Motion Sensor is a versatile tool that can be used in a variety of other experiments.


  • Rotational inertia of a ring and a disk
  • Torque

What’s Included

Interface Required

This product requires a PASCO interface to connect to your computer or device. We recommend the following option(s). For a breakdown of features, capabilities, and additional options, see our Interface Comparison Guide »


Rotational Inertia Experiment English 21.94 MB

Supporting Documents

PASPORT Rotary Motion Sensor Russian 593.51 KB
Large Rod Stand Manual English 39.60 KB
Mass and Hanger Set Manual English 50.56 KB
Mini Rotational Accessory Manual English 53.14 KB
PASPORT Rotary Motion Sensor Manual English 588.17 KB
Manual Downloads

Product Manuals for the Included Products

Mass and Hanger Set Manual (ME-8979)
(30 KB – .pdf – English)
Rotary Motion Sensor Manual PS-2120A
(1.1 MB – .pdf – English)
Large Rod Base Manual (ME-8735)
(46 KB – .pdf – English)
Mini Rotational Accessory Manual (CI-6691)
(39 KB – .pdf – English)
Experiment File
EX-5516 Rotational
(8.7 MB – .zip – English)