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Engineering Mechancis: Statics and Dynamics

by Anthony Bedford and Wallace Fowler
Fourth Edition, Pearson Prentice Hall, Upper Saddele River, NJ 2005

Authors' Homepages:   Anthony Bedford   Wallace Fowler  


Chapter 11: Virtual Work and Potential Energy


"When a spring is stretched, the work performed is stored in the spring as potential energy. Raising an extensible platform increases its gravitational potential energy. In this chapter we define work and potential energy and introduce a general and powerful result called the principle of virtual work."





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