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APPLIED MECHANICS AND GRAPHIC STATICS

Applied Mechanics and Graphic Statics
If the velocity of projection is 4 m/sec and the angle of projection is α°, the maximum height of the projectile from a horizontal plane, is

u² sin 2α/2g
u² sin² α/2g
u² cos² α/2g
u² tan² α/2g

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Applied Mechanics and Graphic Statics
Two particles have been projected at angles 64° and 45° to the horizontal. If the velocity of projection of first is 10 m/sec, the velocity of projection of the other for equal horizontal ranges is

6.3 m/sec
8.3 m/sec
7.3 m/sec
9.3 m/sec

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

30°
45°
60°
None of these

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Applied Mechanics and Graphic Statics
If the angle between the applied force and the direction of motion of a body, is between 90° and 180°, the work done, is called

Zero work
Virtual work
Imaginary work
Negative work

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Applied Mechanics and Graphic Statics
A particle of mass 2 kg executes simple harmonic motion of frequency 6/71 Hz and amplitude 0.25 m. Its maximum kinetic energy is

4.5 J
9.0 J
12.0 J
18.0 J

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