The rigid bar EFG is supported by the truss system shown. Knowing that the member CG is a solid circular rod of 0.75-in. diameter and P=4200 lb, determine the normal stress in CG. B 3 ft E F P -4 ft 4 ft |▬▬4 ft — The normal stress in CG is ksi.

The rigid bar EFG is supported by the truss system shown. Knowing that the member CG is a solid circular rod of 0.75-in. diameter and P = 5000 lb, determine the normal stress in CG. 3 ft B S D E The normal stress in CG is ft P -4 ft ksi.

The bar ABC shown below is loaded by a force P acting at the end C and by a force Q acting at the midpoint B. The bar has constant axial rigidity EA (20pts) 0) 0) Determine the strain energy Ul of the bar when the force Pacts alone (Q Determine the strain energy U2 of the bar when the force Q acts alone (P Determine the strain energy Us of the bar when the forces P and Q act simultaneously upon the bar. b. c. Use the following values to solve the problem: P=30kPa Q=75 kPa E = 130 GPa L=10 m Bar's cross section 450mm 450mm

The rigid beam in (Figure 1) is supported by the three suspender bars. Bars AB and EF are made of aluminum and bar CD is made of steel. al B st μA D 0.75 m 0.75 m 0.75 m 0.75 m PV P= Value al 2P F If each bar has a cross-sectional area of 415 mm², determine the maximum value of P if the allowable stress is (allow)st = 190 MPa for the steel and (allow)al = 150 MPa for the aluminum. Est = 200 GPa El = 70 GPa. Express your answer to three significant figures and include appropriate units. Units 2 m E ?