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1) [30 points] Each element of the truss structure shown below is made out of steel (Youngs modulus for steel = 30,000 ksi) and has a cross-sectional...

1) [30 points] Each element of the truss structure shown below is made out of steel (Youngs modulus for steel = 30,000 ksi) and has a cross-sectional area of 10 in2. Three vertical loads are applied at nodes E, G, and I. a) Is the structure stable? Is it statically determinate? If it is not statically determinate, what is its degree of statical indeterminacy? B) Find the member forces approximately by assuming that diagonal members cannot carry compressive loads.

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