Civil Engineering - Applied Mechanics

46. 

The motion of a particle moving with S.H.M. from an extremity to the other, constitutes

A. half an oscillation
B. one full oscillation
C. two oscillations
D. none of these.

Answer: Option A

Explanation:

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47. 

Two parallel forces 20 kg and 15 kg act. In order that the distance of the resultant from 20 kg force may be the same as that of the former resultant was from 15 kg, the 20 kg force is diminished by

A. 5.5 kg
B. 6.25 kg
C. 8.75 kg
D. 10.5 kg.

Answer: Option C

Explanation:

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48. 

The velocity of a moving body, is

A. a vector quantity
B. a scalar quantity
C. a constant quantity
D. none of these.

Answer: Option A

Explanation:

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49. 

If two equal forces of magnitude P act at an angle θ, their resultant, will be

A. P cos θ/2
B. 2P sin θ/2
C. P tan θ/2
D. 2P cos θ/2
E. P sin θ/2.

Answer: Option D

Explanation:

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50. 

A body of weight 14 g appears to weight 13 g when weighed by a spring balance in a moving lift. The acceleration of the lift at that moment was

A. 0.5 m/sec2
B. 0.7 m/sec2
C. 1 m/sec2
D. 1 cm/sec2.

Answer: Option B

Explanation:

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