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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

2
4
3
5

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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

314
25
5
1.5

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Applied Mechanics and Graphic Statics
For maximum range of a projectile, the angle of projection should be

None of these
30°
60°
45°

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Applied Mechanics and Graphic Statics
A shell travelling with a horizontal velocity of 100 m/sec explodes and splits into two parts, one of mass 10 kg and the other of 15 kg. The 15 kg mass drops vertically downward with initial velocity of 100 m/sec and the 10 kg mass begins to travel at an angle to the horizontal of tan”1 x, where x is

4/5
5/3
3/4
3/5

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Applied Mechanics and Graphic Statics
The motion of a particle moving with S.H.M. from an extremity to the other, constitutes

Two oscillations
Half an oscillation
None of these
One full oscillation

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Applied Mechanics and Graphic Statics
In which of the following trusses, the method of substitution is required for determining the forces in all the members of the truss by graphic statics?

King post truss
Howe truss
Warren truss
Fink truss

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