Civil Engineering - Applied Mechanics

1. 

A retarding force on a body does not

A. change the motion of the body
B. retard the motion of the body
C. introduce the motion of the body
D. none of these.

Answer: Option B

Explanation:

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2. 

The unit of force in C.G.S. system of units, is called

A. dyne
B. Newton
C. kg
D. all the above.

Answer: Option A

Explanation:

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3. 

A block of weight 50 kg is placed on a horizontal plane. When a horizontal force of 18 kg is applied, the block is just on the point of motion. The angle of friction is

A. 17° 48'
B. 18° 48'
C. 19° 48'
D. 20° 48'
E. 21° 48'.

Answer: Option C

Explanation:

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4. 

From a circular plate of a diameter 6 cm is cut out a circle whose diameter is equal to the radius of the plate. The C.G. of the remainder from the centre of circular plate is at a distance of

A. 2.0 cm
B. 1.5 cm
C. 1.0
D. 0.5 cm.

Answer: Option D

Explanation:

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5. 

The force which produces an acceleration of 1 m/sec2 in a mass of one kg, is called

A. dyne
B. Netwon
C. joule
D. erg.

Answer: Option B

Explanation:

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