Engineering Mechanics - Force Vectors

Exercise :: Force Vectors - General Questions

  • Force Vectors - General Questions
11. 

Express the force F1 in Cartesian vector form.

A. F1 = (200 i - 200 j + 283 k) lb
B. F1 = (200 i + 200 j + 283 k) lb
C. F1 = (-200 i + 200 j + 565 k) lb
D. F1 = (-200 i + 200 j + 283 k) lb

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

12. 

Determine the projection of the position vector r along the aa axis.

A. raa = 35.3 m
B. raa = 6.28 m
C. raa = 5.42 m
D. raa = 5.61 m

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

13. 

What is the projection of the force F2 along the positive axis?

A. F2y = 170.0 N
B. F2y = —80.0 N
C. F2y = 90.0 N
D. F2y = 120.0 N

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

14. 

Determine the magnitude and direction of the position vector r which points from point A to point B.

A. r = 12 ft, = 70.5°, = 48.2°, = 131.8°
B. r = 12 ft, = 109.5°, = 131.8°, = 48.2°
C. r = 12 ft, = 70.5°, = 48.2°, = 48.2°
D. r = 12 ft, = 109.5°, = 131.8°, = 131.8°

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

15. 

Determine the magnitude of the x and y components of the 700-lb force.

A. Fx = -350 lb, Fy = 606 lb
B. Fx = -404 lb, Fy = 571 lb
C. Fx = -606 lb, Fy = 350 lb
D. Fx = -571 lb, Fy = 404 lb

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.