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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
When a body in equilibrium undergoes an infinitely small displacement, work imagined to be done, is known as

Imaginary work
Virtual work
None of these
Negative work

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Applied Mechanics and Graphic Statics
A particle moves in a straight line and its position is defined by the equation x = 6 t² - t3 where t is expressed in seconds and ‘x’ in meters. The maximum velocity during the motion is

6 m/sec
24 m/sec
12 m/sec
48 m/sec

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Applied Mechanics and Graphic Statics
Minimum pull in a suspended cable with supports at two ends is equal to

Support reactions
Horizontal thrust
Half the weight of the cable
Resultant of horizontal thrust and support reaction

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Applied Mechanics and Graphic Statics
If two forces of 3 kg and 4 kg act at right angles to each other, their resultant force will be equal to

5 kg
1 kg
7 kg
None of these

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Applied Mechanics and Graphic Statics
A rod AB carries three loads of 30 N, 70 N and 100 N at distances of 20 mm, 90 mm and 150 mm respectively from A. Neglecting the weight of the rod, the point at which the rod will balance is

132.5 mm from A
125.5 mm from A
119.5 mm from A
109.5 mm from A

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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

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

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