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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
A bullet weighing 10 gm moves with a velocity of l km/sec. Its kinetic energy is
(i) 5000 Nm
(ii) 5000 kg.m
(iii) 5000 J

All (i), (ii) and (iii)
Both (ii) and (iii)
Only (ii)
Both (i) and (iii)

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Applied Mechanics and Graphic Statics
The height at which the end of a rope of length ‘l’ should be tied so that a man pulling at the other end may have the greatest tendency to overturn the pillar, is

½ l
2/√3 l
l/√2
¾ l

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Applied Mechanics and Graphic Statics
A stone was thrown vertically upwards from the ground with a velocity of 50 m/sec. After 5 seconds another stone was thrown vertically upwards from the same place. If both the stones strike the ground at the same time, then the velocity with which the second stone was thrown should be (Assume g = 10 m/sec²)

40 m/sec
50 m/sec
15 m/sec
25 m/sec

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Applied Mechanics and Graphic Statics
When a body falls freely under gravitational force, it possesses

No effect on its weight
No weight
Maximum weight
Minimum weight

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Applied Mechanics and Graphic Statics
The tension in a cable supporting a lift

Is less when the lift is moving downwards
Remains constant whether its moves downwards or upwards
Is more when the lift is moving downwards
Is less when the lift is moving upwards

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Applied Mechanics and Graphic Statics
The unit of rotational inertia of a body in C.G.S system is

gm.cm²
cm⁴
kg.cm²
gm.cm3

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