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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
Time of flight of a projectile on a horizontal plane, is

2u tanα/g
2u cosα/g
2u cotα/g
2u sinα/g

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Applied Mechanics and Graphic Statics
A stone was thrown vertically upwards from the ground with a velocity of 50 m/sec. After 5 seconds another stone was thrown vertically upwards from the same place. If both the stones strike the ground at the same time, then the velocity with which the second stone was thrown should be (Assume g = 10 m/sec²)

50 m/sec
40 m/sec
25 m/sec
15 m/sec

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Applied Mechanics and Graphic Statics
A disc of mass 4 kg, radius 0.5 m and moment of inertia 3 kg.m² rolls on a horizontal surface so that its center moves with speed 5 m/see. Kinetic energy of the disc is

200 J
150 J
50 J
400 J

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Applied Mechanics and Graphic Statics
The rotational velocity of a satellite is increased by 450 m per second if its launch is done from equator

Northward
Eastward
Southward
Westward

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Applied Mechanics and Graphic Statics
The piston of a steam engine moves with a simple harmonic motion. The crank rotates 120 r.p.m. and the stroke length is 2 meters. The linear velocity of the piston when it is at a distance of 0.5 metre from the centre, is

5.88 m/sec
8.88 m/sec
10.88 m/sec
12.88 m/sec

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Applied Mechanics and Graphic Statics
The intrinsic equation of catenary is

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

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