# Civil Engineering - Applied Mechanics

### Exercise :: Applied Mechanics - Section 2

41.

For a body moving with simple harmonic motion, the number of cycles per second, is known as its

 A. oscillation B. amplitude C. periodic time D. beat E. frequency.

Explanation:

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42.

If the horizontal range is 2.5 times the greatest height, the angle of projection of the projectile, is

 A. 57° B. 58° C. 59° D. 60°.

Explanation:

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43.

The shape of a suspended cable under its own weight, is

 A. parabolic B. circular C. catenary D. elliptical.

Explanation:

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44.

Time required to stop a car moving with a velocity 20 m/sec within a distance of 40 m, is

 A. 2 sec B. 3 sec C. 4 sec D. 5 sec E. 6 sec.

Explanation:

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45.

The characteristic of a couple, is :

 A. algebraic sum of forces, constituting a couple is zero B. algebraic sum of moments of forces, constituting a couple, about any poin, is same C. a couple can be balanced only by a couple but of opposite sense D. a couple can be never the balanced by a single force E. all the above.