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Unformatted text preview: A block B is pushed against three springs by a force P (see figure). The middle spring has stiffness k 1 and the outer springs each have stiffness k 2 . Initially, the springs are unstressed and the middle spring is longer than the outer springs (the difference in length is denoted s ). (a) Draw a force-displacement diagram with the force P as ordinate and the displacement x of the block as abscissa. (b) From the diagram, determine the strain energy U 1 of the springs when x 5 2 s . (c) Explain why the strain energy U 1 is not equal to P d /2, where d 5 2 s . Solution 2.7-11 Block pushed against three springs P B x k 2 k 1 k 2 s = + + A-PDF Split DEMO : Purchase from www.A-PDF.com to remove the watermark...
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This note was uploaded on 09/20/2009 for the course COE 3001 taught by Professor Armanios during the Spring '08 term at Georgia Tech.
- Spring '08