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Question: 219 the equivalent stiffness of a series parallel combination of...

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2-19. The equivalent stiffness of a series- parallel combination of three springs shown in Fig. P2.19 is given by kik2 (2.65) If ki -k2 +2 lb/in and the equivalent stiffness is k - 1.75 lb/in, find k1 and k as follows: (a) Substitute the values of k and ki into equation (2.65) and obtain the quadratic equation for k2. (b) Using the method of your choice, solve the quadratic equationobtained in part (a) and determine the values of k2. Also, find the values of ki. k2 гооо

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