A bullet weighing 200 g is fired horizontally with a velocity of 25 m/sec from a

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Question
A bullet weighing 200 g is fired horizontally with a velocity of 25 m/sec from a gun carried on a carriage which together with the gun weighs 100 kg. The velocity of recoil of the gun, will be
Options
A. 0.01 m/sec
B. 0.05 m/sec
C. 1.00 m/sec
D. 1.5 m/see.

Correct Answer

0.05 m/sec

Applied Mechanics problems

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1. If a body moves in such a way that its velocity increases by equal amount in equal intervals of time, it is said to be moving with
Options
A. a uniform retardation
B. a uniform acceleration
C. a variable acceleration
D. a variable retardation
E. none of these.

2. A square hole is punched out of a circular lamina, the diagonal of the square being the radius of the circle. If r is the radius of the circle, the C.G. of the remainder from the corner of the square on the circumference will be
Options
A.
B.
C.
D.

4. The maximum value of effective stress in the past divided by the present value, is defined as over consolidation ratio (OCR). The O.C.R. of an over consolidated clay is
Options
A. less than 1
B. 1
C. more than 1
D. None of these.

5. Pick up the correct statement from the following:
Options
A. The rise of the ground surface due to frost action is called frost heave.
B. The freezing of water is accompained by a volume increase of 9%.
C. Below freezing point, higher soil suction develops.
D. The magnitude of frost heave decreases as the degree of saturation of soil decreases
E. All the above.

6. The forces which meet at one point and have their lines of action in different planes are called
Options
A. coplaner non-concurrent forces
B. non-coplaner concurrent forces
C. non-coplaner non-current forces
D. intersecting forces
E. none of these.

7. Which one of the following statements is true?
Options
A. The tangent of the angle of friction is equal to coefficeint of friction
B. The angle of repose is equal to angle of friction
C. The tangent of the angle of repose is equal to coefficient of friction
D. All the above.

8. At a given instant ship A is travelling at 6 km/h due east and ship B is travelling at 8 km/h due north. The velocity of B relative to A is
Options
A. 7 km/hrs
B. 2 km/hrs
C. 1 km/hrs
D. 10 km/hrs
E. 14 km/hrs.

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