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The Physics Teacher -- January 2012 -- Volume 50, Issue 1, pp. 35
Angular Acceleration Without Torque?
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Add to FacebookHardly. Just as Robert Johns qualitatively describes angular acceleration by an internal force in his article “Acceleration Without Force?”1 here we will extend the discussion to consider angular acceleration by an internal torque. As we will see, this internal torque is due to an internal force acting at a distance from an instantaneous center.2
© 2012 American Association of Physics Teachers
Acknowledgments
The author would like to thank Professor Eric Sheldon, emeritus at UMass Lowell and now Academic Visitor at the University of Oxford, for his support. Professor Sheldon provided editorial comments and suggestions. The author would also like to thank the anonymous referees for indicating where the text should be made clearer. Finally the author would like to thank David Kaufman for his help in generating figures.
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