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Question: q1 problem 124 a circular aluminum tube of length l400...

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Q1. Problem 1.2-4 A circular aluminum tube of length L-400 mm is loaded in compression by forces P (see figure). The outside and inside diameters are 60 mm and 50 mm, respectively. A strain gage is placed on the outside of the bar to measure normal strains in the longitudinal direction. Strain gage L 400mm (a) If the measured strain in e- 550 x 10-6, what is the shortening δ of the bar? (b) If the compressive stress in the bar is intended to be 40 MPa, what should be the load P
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