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26-02-2024
Physics

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The horizontal beam is rigid, and the three vertical bars have the same length. The bars AB and EF are made of aluminum (α = 12.8x10-6/oF), and the bar CD is made ofsteel (α = 6.6x10-6/oF). The members are connected when the temperature is 90oF. Then the temperature drops to 50oF.

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