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Engineering Mechanics - Interview Questions and Answers

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11. 13. The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is as per the principle of
A. forces
B. independence of forces
C. dependence of forces
D. balance of force
E. resolution of forces.
Explanation:
12. 26. The magnitude of two forces, which when acting at right angle produce resultant force of VlOkg and when acting at 60� produce resultant of Vl3 kg. These forces are
A. 2 and V6
B. 3 and 1 kg
C. V5andV5
D. 2 and 5
E. none of the above.
Explanation:
13. 12. If two equal forces of magnitude P act at an angle 9�, their resultant will be
A. P/2 cos 9/2
B. IP sin 9/2
C. 2P tan 9/2
D. IP cos 9/2
E. Psin 9/2.
Explanation:
14. 23. Which of the following is not a scalar quantity
A. time
B. mass
C. volume
D. density
E. acceleration.
Explanation:
15. 9. If a number of forces act simultaneously on a particle, it is possible
A. not a replace them by a single force
B. to replace them by a single force
C. to replace them by a single force through C.G.
D. to replace them by a couple
E. to replace them by a couple and a force.
Explanation:
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