Mechanics of Materials_AJ_PROFESSIONAL_SERVICES

For the beam shown, select the correct moment diagram.

• A

• B

• C

• D

The shear diagram is shown below for a beam. The maximum magnitude of the bending moment (kN-m) in the beam is most nearly:

• 62.5

• 500

• 562

• 450.5

The bending moment diagram for a particular beam is shown below. Which of the following diagrams correctly represents the shear force diagram for this beam?

• 
• 
• 
• 

Which of the following diagrams describes the shape of the shear force diagram for the cantilever beam shown below, which is subjected to a uniformly distributed load?

• 
• 
• 
• 

The maximum shear force (kips) developed in the beam shown is most nearly:

• -100

• 100

• -500

• 500

Consider a 3 m long simply supported beam, that is loaded by two equal 5 kN forces at distances of 1 m and 2 m from the left side of the beam. What is the magnitude of the shear force at the midpoint of the beam?

• 0 kN

• 5 kN

• 10 kN

• 20 kN

For the beam shown, what is the expression for the bending moment at segment 1?

• 4x+14

• 4x+28

• 18x-14

• 32x+28

A 2-ft rod with a radius of 0.2 in. is subjected to a tensile force of 1200 lb. The rod has a total elongation of 0.008 in. The modulus of elasticity (ksi) of the rod is most nearly:

• 1,235

• 2,387

• 28,648

• 114,592

A 5 mm diameter wire is subjected to a tension load of 2,500 N. The wire has a modulus of elasticity of 120 GPa. If the total elongation of the wire must not exceed 14 mm, the maximum allowable length (m) of the wire is most nearly:

• 10.4

• 13.2

• 15.2

• 15.5

A steel rod has a gage length and diameter of 4 inches and 0.475 inches, respectively. The modulus of elasticity of steel is 29,000 ksi. At the proportional limit, the rod is subjected to a tensile load of 6.85 kips resulting in the rod being elongated by 0.0084 inches and the diameter is reduced by 0.0006 inches. The possion’s ratio is:

• 0.60

• 0.65

• 0.55

• 0.50