Rotational Inertia Experiment - EX-5516B

Rotational Inertia Experiment


A complete experiment for investigating Rotational Inertia. Designed for use with PASCO Capstone software.


  • Rotational inertia of a ring and a disk
  • Torque

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 versus 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.


The rotational inertia of the ring and disk is calculated from the angular acceleration obtained from the slope of this angular velocity vs. time graph.

PASCO Advantage

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

Buying Guide

Ohaus Triple-Beam Balance (without Tare)
Stainless Steel Calipers
Ohaus Triple-Beam Balance (without Tare)   SE-8723
Stainless Steel Calipers   SF-8711

Interface Required

To use this product you need a PASCO interface. 

New to probeware or have questions about  sensors or interfaces? Contact Teacher and Technical Support.  We're here to help!

Software Required

This product requires or recommends PASCO Capstone for data collection and analysis.