EGN 3310 Practice Final Spring 2017

Transcription

1 EGN 3310 Practice Final Spring 2017 *Try finishing each problem in 15 minutes or less to practice test-like time contraints. The topics on the practice exam are what I feel have been stressed in class, but there may be problems on the test not like ones in this practice test. Use other resources like the notes, examples, and homework to better prepare for the exam. **My solutions will be posted on my wordpress site in the next couple of days: ucfsi.wordpress.com *Things to think about after finishing a problem/when studying: 1. What were the steps involved in this problem? 2. How do these steps for this problem compare to a different problem on the same subject material? 3. What did I struggle with? What can I do to to help with this? 4. The hardest thing is starting a problem. I like to go through the examples in the book that are already solved and cover up the work and in my head or on paper write what it is asking for and what steps I might do in order to find the answer. 5. If you start stressing out after an hour or so, then it is time to take a break. Don t burn yourself out. 6. You got this. I believe in you.

2 Use the figure below to answer the questions on this page. 1. Determine the x-component of F1. A. 0 N B. 900 N 2. Determine the y- component of F2. A N B N 3. Determine the x-component of F3. A N B N 4. Determine the magnitude of the Resultant Force. A N B N 5. Determine the direction of the Resultant Force. A B C

3 For all problems on this page assume that h=4m and the traffic light has a mass of 15 kg. 6. The tension required to support the traffic light in cable AB is A. 221 N B. 515 N 7. The tension required to support the traffic light in cable AC is A. 221 N B. 515 N 8. The tension required to support the traffic light in cable AD is A. 221 N B. 515 N

4 Use the picture below to answer the questions on the page. 9. Express the moment of the couple acting on the pipe in Cartesian vector form. What is the magnitude of the couple moment? Take F = 125 N. A N B. (37.5i 25j+0k) Nm C Nm D. 125 Nm 10. If the couple moment acting on the pipe has a magnitude of 300 Nm, determine the magnitude F of the forces applied to the wrenches. A. 125 N B N C. 125 Nm D. 832 N

5 Use the picture below to answer the questions on the page. 11. Determine the x-component of the reaction at A. A. 9 kn B. 5kN D. No component exists in this direction for this type of support 12. Determine the y-component of the reaction at A. A. 9 kn B. 5 kn D. No component exists in this direction for this type of support. 13. Determine the x-component of the reaction at B. A. 9 kn B. 5 kn D. No component exists in this direction for this type of support 14. Determine the y-component of the reaction at B. A. 9 kn B. 5kN D. No component exists in this direction for this type of support.

6 For all problems on this page assume that P= 8 kn. 15. Determine the force in member AB 16. Determine the force in member BC. 17. Determine the force in member CD. 18. Determine the force in member DE. 19. Determine the force in member EA. 20. Determine the force in member EB. 21. Determine the force in member EC.

7 Use the following figure for the problems on the page. 22. Locate the centroid x of the shaded area. A. a h B. h 3 C. ( a b )(b) h D. 1 (a + b) Locate the centroid y of the shaded area. A. a h B. h 3 C. ( a b )(b) h D. 1 (a + b) 3

8 Determine the moment of Inertia for the beam s cross-sectional area about the y-axis.

9 Draw the Shear and Moment Diagram for the following figure.