HW7 - HOMEWORK PROBLEMS Week 7 Due Friday 28 October 1 The...

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HOMEWORK PROBLEMS Week 7: Due Friday 28 October 1. The assembly shown in Figure 1 comprises a hollow cylinder CD (seen in section) connected to a solid cylinder AB by a rigid disk at BC . The two cylinders are both made of steel for which E = 210 GPa and the hollow cylinder rests on a rigid support at D . If a force of 10 kN is applied at A , determine the average normal stress in AB and in CD and indicate whether these stresses are tensile or compressive. Determine also the distance that the end A moves downwards under the influence of the applied force. A B C D 20 4 60 120 70 10 kN hollow cylinder rigid disk solid cylinder Figure 1 1

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In Figure 2, the two horizontal bars ABC and DEF are rigid and originally horizontal and the links CE and DG are 1/4 inch diameter steel rods. All the pin joints are frictionless. If a force of 5000 lbs is applied at B , find the vertical displacement of the pins at C , E and D . ( E
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HW7 - HOMEWORK PROBLEMS Week 7 Due Friday 28 October 1 The...

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