Working model tutorial

Working Model Tutorial
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Information in this document is subject to change without notice and does not represent a commitment on the part of MSC.Software Corporation. The software described in this document is furnished under a license agreement or non-disclosure agreement. The software may be used or copied only in accordance with the terms of the agreement. It is against the law tocopy the software on any medium except as specifically allowed in the license or non-disclosure agreement. No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, for any purpose without the express written permission of MSC.Software Corporation. © Copyright MSC.Software Corporation 2004. All rightsreserved. Published and printed in the U.S.A. Portions © 1992-1995 Summit Software Company. MSC and the MSC.Software logo are registered trademarks of MSC.Software Corporation. Smart Editor, Working Model, Working Model Basic and WM Basic are trademarks of MSC.Software Corporation. Mac and MacOS are registered trademarks of Apple Computer, Incorporated. Microsoft, Windows, and Windows NT areregistered trademarks of Microsoft Corporation. PowerPC is a registered trademarks of International Business Machines Corporation. MATLAB is a registered trademark of the MathWorks, Incorporated. All other brand or product names are trademarks or registered trademarks of their respective holders. Last Revised 06/01/2004

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Contents

Exercise 1Introductory Demonstration ....................................................................... 1-1
1.1. 1.2. 1.3. 1.4. 1.5. 1.6. 1.7. 1.8. 1.9. 1.10. 1.11. 1.12. 1.13. Starting Working Model.................................................................................1-2 Setting up the Workspace...............................................................................1-2 Creating aFalling Block.................................................................................1-3 Making a Pendulum........................................................................................1-4 Adding a Velocity Vector...............................................................................1-5 Changing an Object’s Appearance.................................................................1-6 Graphing the Pendulum’s Motion ..................................................................1-7 Adding Air Resistance....................................................................................1-8 Adding a Spring............................................................................................1-10 Controlling the SpringConstant...................................................................1-10 Collisions with a Smooth Polygon ...............................................................1-11 Smart Editor..................................................................................................1-12 Creating a Cam-Follower Mechanism..........................................................1-13

Exercise 2

A Double-SlottedRod.................................................................................. 2-1
2.1. 2.2. 2.3. Introduction ....................................................................................................2-2 Setting Up the Workspace ..............................................................................2-2 Creating theRod.............................................................................................2-5 Drawing the Rod ......................................................................................2-5 Sizing the Rod..........................................................................................2-6 Zooming In...............................................................................................2-7 Setting the Weight of the...