Engineering Mechanics - Force Vectors

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Exercise : Force Vectors - General Questions
  • Force Vectors - General Questions
1.

The cord is attached between two walls. If it is 8 m long, determine the distance x to the point of attachment at B.

x = 7.75 m
x = 7.68 m
x = 6.93 m
x = 7.94 m
Answer: Option
Explanation:
No answer description is available. Let's discuss.

2.

Determine the magnitude of the resultant force by adding the rectangular components of the three forces.

R = 29.7 N
R = 54.2N
R = 90.8 N
R = 24.0 N
Answer: Option
Explanation:
No answer description is available. Let's discuss.

3.

Express force F as a Cartesian vector; then determine its direction angles.

F = (-2i +j+2k) kN, = 48.2°, = 70.5°, = 48.2°
F = (-2i +j+2k) kN, = 131.8°, = 70.5°, = 48.2°
F = (-4i +j+4k) kN, = 48.2°, = 70.5°, = 48.2°
F = (-4i +2j+4k) kN, = 131.8°, = 70.5°, = 48.2°
Answer: Option
Explanation:
No answer description is available. Let's discuss.

4.

Determine the magnitude and direction of the resultant force.

R = 80.3 lb, = 106.2° CCW
R = 80.3 lb, = 73.8° CCW
R = 72.1 lb, = 63.6° CCW
R = 72.1 lb, = 116.4° CCW
Answer: Option
Explanation:
No answer description is available. Let's discuss.

5.

Force F acts on peg A such that one of its components, lying in the x-y plane, has a magnitude of 50 lb. Express F as a Cartesian vector.

F = (43.3 i + 25.0 j + 25.0 k) lb
F = (43.3 i + 25.0 j + 28.9 k) lb
F = (43.3 i - 25.0 j + 25.0 k) lb
F = (43.3 i - 25.0 j + 28.9 k) lb
Answer: Option
Explanation:
No answer description is available. Let's discuss.