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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
A stone of mass 1 kg is tied to a string of length 1 m and whirled in a horizontal circle at a constant angular speed 5 rad/sec. The tension in the string is,

15 N
5 N
10 N
25 N

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Applied Mechanics and Graphic Statics
If two forces are in equilibrium, then the forces must (i) Be equal in magnitude (ii) Be opposite in sense (iii) Act along the same line

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

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Applied Mechanics and Graphic Statics
The Centre of gravity of a 10 × 15 × 5 cm T section from its bottom, is

5.0 cm
7.85 cm
8.75 cm
7.5 cm

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Applied Mechanics and Graphic Statics
The locus of the instantaneous centre of a moving rigid body, is

Centroid
Spiral
Involute
Straight line

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Applied Mechanics and Graphic Statics
Pick up the correct statement from the following. The kinetic energy of a body

Before impact is equal to that after impact
Before impact is less than that after impact
Remain constant
Before impact is more than that after impact

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Applied Mechanics and Graphic Statics
A shell of mass 100 kg travelling with a velocity of 10 m/sec breaks into two equal pieces during an explosion which provides an extra kinetic energy of 20000 Joules. If the pieces continue to move in the same direction as before, then the speed of the faster one must be

30 m/sec
50 m/sec
40 m/sec
20 m/sec

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