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Problem 8.3-5 A strain gage is installed in the longitudinal direction on the surface of an aluminum heverage can (see figure). The radius-to-thickness ratio of the can is 200. When the lid of the can is popped open, the strain changes by -170 x 10 (a) What was the internal pressure p in the can? (Assume E-70 GPa and-0.33.) (b) What is the change in strain in the radial direction when the lid is opened?
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