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Classroom Models For Illustrating Dynamics Principles Part Ii. Rigid Body Kinematics And Kinetics

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1997 Annual Conference


Milwaukee, Wisconsin

Publication Date

June 15, 1997

Start Date

June 15, 1997

End Date

June 18, 1997



Page Count


Page Numbers

2.102.1 - 2.102.10



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Paper Authors

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Michael A. Magill

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NOTE: The first page of text has been automatically extracted and included below in lieu of an abstract

Session 3268

Classroom Models for Illustrating Dynamics Principles Part II. - Rigid Body Kinematics and Kinetics

Michael A. Magill, Ph.D., P.E. Purdue University


This paper is part II in a two part series that describes a collection of ten classroom models used to illustrate basic Dynamics principles. The models discussed in part I of the series cover the topics of Particle Kinematics and Kinetics while part II covers Rigid Body Kinematics and Kinetics. These models are excellent tools for communicating basic Engineering Mechanics concepts while also stimulating interest and enthusiasm. These devices were developed for undergraduate engineering technology students but they are equally valuable for engineering students. Most of these models are inexpensive or can be constructed easily.

INTRODUCTION Dynamics is one of the more difficult courses that engineering and engineering technology students encounter during their undergraduate study. As a result, mechanics instructors are trying continually to find or develop techniques that enhance student learning. One of the greatest challenges is creating student interest and enthusiasm. It is well known that students learn more and work harder when they are interested in a topic. A good technique for breaking the monotony of classroom lectures and creating student interest is to introduce exciting classroom models. These models teach basic mechanics principles but more importantly they get students involved, stimulate interest and give a change of pace. The time required to properly present a model is roughly the same as presenting an example problem.

THE CLASSROOM MODELS The models discussed in this paper (Part II) cover the topics of Rigid Body Kinematics and Kinetics. All the information necessary for developing these models and presenting them in the classroom is provided within the paper. The details for each model are provided on separate pages to facilitate duplicating and using them as classroom handouts. The description of each model includes an interesting problem statement, descriptive diagrams, and the analytical solution.

The five classroom models* presented in this paper are: •Equation of Motion - Rolling Yo-Yo •Equation of Motion - Rolling Ring Versus Rolling Disk •Mass Moment of Inertia - Rolling Solid Cylinder Versus Rolling Hollow Cylinder •Work/Energy - Weight Suspended From a Wheel •Conservation of Momentum - Rotating Bicycle Wheel

Magill, M. A. (1997, June), Classroom Models For Illustrating Dynamics Principles Part Ii. Rigid Body Kinematics And Kinetics Paper presented at 1997 Annual Conference, Milwaukee, Wisconsin. 10.18260/1-2--6453

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