# Engineering Mechanics - Force Vectors

### Exercise :: Force Vectors - General Questions

• Force Vectors - General Questions
16.

Determine the magnitude and direction of the resultant force.

 A. R = 251 N, = 85.5° CCW B. R = 251 N, = 94.5° CCW C. R = 421 N, = 67.7° CCW D. R = 421 N, = 112.3° CCW

Explanation:

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17.

The gusset plate G of a bridge joint is subjected to the two member forces at A and B. If the force at B is horizontal and the force at A is directed at = 30°, determine the magnitude and direction of the resultant force.

 A. R = 458 N, = 97.5° CCW B. R = 252 N, = 82.5° CCW C. R = 252 N, = 97.5° CCW D. R = 458 N, = 82.5° CCW

Explanation:

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18.

If = 20° and = 35°, determine the magnitudes of F1 and F2 so that the resultant force has a magnitude of 20 lb and is directed along the positive x axis.

 A. F1 = 20.0 lb, F2 = 22.9 lb B. F1 = 25.6 lb, F2 = 26.6 lb C. F1 = 28.5 lb, F2 = 11.91 lb D. F1 = 14.00 lb, F2 = 8.35 lb

Explanation:

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19.

Determine the angle between the pole AC and the wire AB.

 A. = 131.8° B. = 70.5° C. = 109.5° D. = 48.2°

Explanation:

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20.

Two forces act on a block. Determine the angle between them.

 A. = 135.0° B. = 65.1° C. = 45.0° D. = 114.9°