Exam: 498806RR – INTRO TO STATICS When you have completed your exam and reviewed your answers, click Submit Exam. Answers will…

Exam: 498806RR – INTRO TO STATICS

When you have completed your exam and reviewed your answers, click Submit Exam. Answers will not be recorded until you

hit Submit Exam. If you need to exit before completing the exam, click Cancel Exam.

Questions 1 to 20: Select the best answer to each question. Note that a question and its answers may be split across a page

break, so be sure that you have seen the entire question and all the answers before choosing an answer.

1. Refer to the image shown here in answering this question.

What is the x-axis component of the force shown in the figure?

A. 114.68 lbs

B. 59.7 lbs

C. 80.3 lbs

D. 25.32 lbs

2. Refer to the image shown here in answering this question.

Determine the moments of the forces about Point A in the figure. Note that counterclockwise moments are

positive.

A. –370.77 ft-lbs

B. –3064.62 ft-lbs

C. 2806.48 ft-lbs

D. 3064.62 ft-lbs

3. Refer to the image shown here in answering this question.

What is the y-axis component of the force shown in this figure?

A. 25.32 lbs

B. 59.7 lbs

C. 114.68 lbs

D. 80.3 lbs

4. Refer to the image shown here in answering this question.

The distributed load shown in this figure is converted to a concentrated load. At what distance from Point

A will the concentrated load act on the beam?

A. 3.33 m

B. 0 m

C. 5 m

D. 6.67 m

5. Refer to the image shown here in answering this question.

In this figure, determine the reaction at Point A.

A. 200 lbs

B. 2000 lbs

C. 1000 lbs

D. 500 lbs

6. Refer to the image shown here in answering this question.

Determine the moments of the forces about Point B in the figure. Note that counterclockwise moments are

positive.

A. 3609.24 ft-lbs

B. 370.77 ft-lbs

C. 064.62 ft-lbs

D. –3064.62 ft-lbs

7. Refer to the image shown here in answering this question.

The distributed load shown in the figure is converted to a concentrated load. At what distance from Point A

will the concentrated load act on the beam?

A. 3.33 ft

B. 10 ft

C. 0 ft

D. 5 ft

8. Refer to the image shown here in answering this question.

What is the y-axis component of Force 1 shown in the figure?

A. 82.45 lbs

B. 19.33 lbs

C. 250 lbs

D. 230.77 lbs

9. Refer to the image shown here in answering this question.

What is the y-axis component of Force 2 shown in the figure?

A. –30.31 lbs

B. 30.31 lbs

C. 112.69 lbs

D. –112.69 lbs

10. Refer to the image shown here in answering this question.

What is the angle (in degrees) of the resultant force of the concurrent force system shown in the figure?

The angle should be measured counterclockwise, with respect to the positive x-axis.

A. –3.56

B. –2.44

C. 2.44

D. 3.56

11. Which one of the following sign conventions iscorrect?

A. A force causing clockwise rotation creates a negative moment.

B. Downward-pointing forces are positive.

C. Upward pointing forces are negative.

D. A force causing a counterclockwise rotation creates a negative moment.

12. Refer to the image shown here in answering this question.

What is the x-axis component of Force 1 shown in the figure?

A. 237.23 lbs

B. 19.77 lbs

C. 98.85 lbs

D. 158.15 lbs

13. Refer to the image shown here in answering this question.

What is the x-axis component of Force 2 shown in the figure?

A. 54.96 lbs

B. 30.31 lbs

C. 88.04 lbs

D. 112.69 lbs

14. A pinned connection has

A. both a reaction moment and a reaction with both X and Y components.

B. one reaction with both X and Y components.

C. only a reaction moment.

D. one reaction with either an X or Y component.

15. Refer to the image shown here in answering this question.

The distributed load shown in the figure is converted to a concentrated load. What magnitude will the

concentrated load have?

A. 2500 lbs

B. 1000 lbs

C. 2000 lbs

D. 200 lbs

16. When converting a uniform distributed load to a concentrated load, the location of the concentrated

load is placed

A. at the left end of the loaded area.

B. at the center of the loaded area.

C. at the right end of the loaded area.

D. somewhere between the center and the left or right end of the loaded area.

17. Refer to the image shown here in answering this question.

In this figure, determine the reaction at Point A.

A. 33 kN

B. 83.25 kN

C. 50 kN

18. Refer to the image shown here in answering this question.

Determine the reaction at Point B, shown in the figure.

A. 0 lbs

B. 300 lbs

C. 350 lbs

D. 550 lbs

19. Refer to the image shown here in answering this question.

End of exam

What is the y-axis component of Force 1 shown in the figure?

A. 19.77 lbs

B. 158.15 lbs

C. 237.23 lbs

D. 98.85 lbs

20. Refer to the image shown here in answering this question.

In this figure, determine the y-axis component of the reaction at Point B.

A. 0 lbs

B. 500 lbs

C. 200 lbs

D. 1000 lbs

 

Exam: 498809RR – BEAMS, COLUMNS, LOAD SYSTEMS

When you have completed your exam and reviewed your answers, click Submit Exam. Answers will not be recorded until you

hit Submit Exam. If you need to exit before completing the exam, click Cancel Exam.

Questions 1 to 20: Select the best answer to each question. Note that a question and its answers may be split across a page

break, so be sure that you have seen the entire question and all the answers before choosing an answer.

1. Refer to the image shown here in answering this question.

The beam whose cross section is shown in the figure supports a moment of 500 lb-ft. Determine its

bending stress.

A. .52 lb/ft2

B. .78 lb/ft2

C. .62 lb/ft2

D. .84 lb/ft2

2. Determine the modulus of elasticity of a 4.5-inch diameter column, that’s 100 inches high, and pinned at

the top and bottom. The column has a critical buckling stress (fcr) of 3 ksi.

A. 6.0 × 105 psi

B. 7.2 × 105 psi

C. 6.4. × 105 psi

D. 5.2 × 105 psi

3. Refer to the image shown here in answering this question.

For the beam shown in the figure, determine the reaction at Point B.

A. 5800 lbs

B. 3200 lbs

C. 1800 lbs

D. 2900 lbs

4. Refer to the image shown here in answering this question.

For the beam shown in the figure, determine the y-axis component of the reaction at Point A.

A. 450 lbs

B. 250 lbs

C. 650 lbs

D. 800 lbs

5. Refer to the image shown here in answering this question.

Determine the moment of inertia of the object shown in the figure.

A. 9273.33 ft4

B. 8873.33 ft4

C. 6386.66 ft4

D. 7873.33 ft4

6. Refer to the image shown here in answering this question.

For the beam shown in this figure, determine the reaction at Point B.

A. 250 lbs

B. 450 lbs

C. 650 lbs

D. 800 lbs

7. Refer to the image shown here in answering this question.

The beam whose cross section is shown in the figure supports a moment of 1000 N-m. Determine its

bending stress.

A. 5.67 N/m2

B. 8.33 N/m2

C. 10 N/m2

D. 6.33 N/m2

8. Determine the critical buckling stress (fcr ) of a 2-inch radius column that’s 10 feet high, and pinned at

the top and bottom. The column’s material has a modulus of elasticity of 1.5 x 106 psi.

A. 4112.34 psi

B. 1280.44 psi

C. 2319.56 psi

D. 3419.56 psi

9. Beams are designed for all of the following, except

A. moments.

B. shear.

C. critical buckling.

D. deflection.

10. Refer to the image shown here in answering this question.

The rectangular beam shown in this figure has a cross-sectional area of 75 in.2 and supports the loads

shown. Determine the maximum shear stress.

A. 42 psi

B. 16 psi

C. 32 psi

D. 58 psi

11. All buildings are subjected to wind and/or earthquake force and must therefore have

A. moment of inertia about the y-axis.

B. a structural system for resisting lateral forces.

C. allowable compressive stress.

D. actual compressive stress.

12. The two basic categories that define types of columns are

A. short and long.

B. thick and thin.

C. circular and rectangular.

D. soft and hard.

13. Bending stresses that are within a member’s elastic limit are composed of

A. the summation of the moments.

B. compressive stresses only.

C. tensile stresses only.

D. compressive and tensile stress.

14. Refer to the image shown here in answering this question.

The rectangular beam shown in this figure has a cross sectional area of 75 in.2 and supports the loads

shown. Determine what the maximum shear stress would be if only the two 800 lb concentrated forces

were applied.

A. 32 psi

B. 58 psi

C. 16 psi

D. 42 psi

15. Refer to the image shown here in answering this question.

For the beam shown in the figure, determine the Y-axis component of the reaction at Point A.

A. 2900 lbs

B. 3200 lbs

C. 1800 lbs

D. 5800 lbs

16. Deflection in a beam is simply defined as

A. vertical sag.

B. a diagonal force.

C. horizontal stretch.

D. a neutral axis force.

17. Refer to the image shown here in answering this question.

The rectangular beam shown in Figure 19A has a cross sectional area of 50 in.2 and supports the loads

shown. Determine what the maximum shear stress would be if only the two 250 lb concentrated forces

were applied.

A. 12 psi

B. 7.5 psi

C. 19.5 psi

D. 7 psi

18. Refer to the image shown here in answering this question.

The beam whose cross section is shown in this figure supports a moment of 1000 N-m. Determine its

bending stress.

A. 52.24 psi

B. 43.58 psi

C. 58.42 psi

D. 62.85 psi

19. Shear stresses, unlike bending stresses, are

A. vertical.

B. neither horizontal or vertical.

C. both horizontal and vertical.

D. horizontal.

20. All of the following are examples of lateral loads, except

A. a weight sitting on top of a chair.

B. earthquakes (seismic) loads.

C. wind loads.