A 3D printed polymer rod measures 146.00 mm in length while on the heated print bed at 51.1°C. After cooling to room temperature at 20.7°C the rod measures 145.60 mm in length. Determine the coefficient of thermal expansion of the polymer.

If the normal stress in rod (1) is limited to 210 MPa and the required factor of safety is 1.8, determine the maximum load P that can be applied to rod (2). Let a = 0.30 m, b = 0.82 m, and the cross-sectional area of rod (1) be 85 mm2.

Axial loads are applied with rigid bearing plates to the solid cylindrical rods. One load of P = 90 kN is applied to the assembly at A, two loads Q = 20 kN are applied at B, and two loads R = 150 kN are applied at C. Determine the total change in length of the assembly.L1 = 0.26 m, E1 = 192 GPa, A1 = 0.0014 m2L2 = 0.40 m, E2 = 214 GPa, A2 = 0.0005 m2L3 = 0.32 m, E3 = 108 GPa, A3 = 0.0015 m2

A load of P = 8 N is applied to a hex wrench that has lengths a = 35 mm and b = 123 mm. Determine the torque applied to the set screw.

Axial loads are applied with rigid bearing plates to the solid cylindrical rods. One load of P = 130 kN is applied to the assembly at A, two loads Q = 40 kN are applied at B, and two loads R = 140 kN are applied at C. Determine the total change in length of the assembly.L1 = 0.24 m, E1 = 194 GPa, A1 = 0.0014 m2L2 = 0.44 m, E2 = 206 GPa, A2 = 0.0003 m2L3 = 0.32 m, E3 = 104 GPa, A3 = 0.0015 m2

A 40-lb cardboard box sits on an oak beam. Determine the maximum bending moment in the beam if the weight is modeled as distributed load w = 1.6667 lb/in. Let a = 37 in. and b = 24 in.

A 3D printer is used to create a shock absorbed composed of two polymers. Polymer (1) [E = 260 ksi] has a cross-sectional area of 2.0 in.2. Polymer (2) [E = 240 ksi] has a cross-sectional area of 2.0 in.2. After the shock absorber is loaded between steel plates by load P = 475 lb, determine the load carried by polymer (2).

A load of P = 12,100 lb is applied to the connection. If the average shear stress in the bolts is limited to 27 ksi and the required factor of safety is 2.3, determine the minimum allowable bolt diameter.

A load of P = 7,400 lb is applied to the connection. If the average shear stress in the bolts is limited to 33 ksi and the required factor of safety is 1.9, determine the minimum allowable bolt diameter.

If a load of P = 13 kN is applied to rod (2), determine the magnitude of the resultant force at C. Let a = 0.37 m and b = 0.65 m.