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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
The equation of motion of a particle starting from rest along a straight line is x = t³ - 3t²+ 5. The ratio of the accelerations after 5 sec and 3 sec will be

4
5
2
3

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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

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

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Applied Mechanics and Graphic Statics
The intrinsic equation of catenary is

y = c cosh ψ
y = c cosh x/c
y = c sinh ψ
S = c tan ψ

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Applied Mechanics and Graphic Statics
A projectile is fired with a velocity of 100.3 m/sec. at an elevation of 60°. The velocity attained by the projectile when it is moving at a height of 100 m, is

70 m/sec
80 m/sec
75 m/sec
90 m/sec

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Applied Mechanics and Graphic Statics
In a simple screw jack, the pitch of the screw is 9 mm and length of the handle operating the screw is 45 cm. The velocity ratio of the system is

1.5
25
314
5

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Applied Mechanics and Graphic Statics
One half of a vibration of a body, is called

Period time
Amplitude
Beat
Oscillation

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