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2.5-10 A rigid bar ABCD is pinned at end A and supported by two cables at points B and C (see figure). The cable at B has nominal diameter dB - 12 mm and the cable at C has nominal diameter de 20 mm. A load P acts at end D of the bar. What is the allowable load P if the temperature rises by 60°C and each cable is required to have a factor of safety of at least 5 against its ultimate load? (Note: The cables have effective modulus of elasticity E 140 GPa and coefficient of thermal expansion a 12 X 10 6PC. Other properties of the cables can be found in Table 2-1, Section 2.2.) dB PROB. 2.5-10

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Citve olata fem the uso 231 free 13 -A FA) 2 b 2 b (刪

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