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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
When a body in equilibrium undergoes an infinitely small displacement, work imagined to be done, is known as

Virtual work
None of these
Negative work
Imaginary work

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Applied Mechanics and Graphic Statics
A ball moving with a velocity of 5 m/sec impinges a fixed plane at an angle of 45° and its direction after impact is equally inclined to the line of impact. If the coefficient of restitution is 0.5, the velocity of the ball after impact will be

3.5 m/sec
1.5 m/sec
2.5 m/sec
0.5 m/sec

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Applied Mechanics and Graphic Statics
The following factor affects the orbit of a satellite up to an altitude of 720 km from the earth's surface

Gravity of the sun and the moon
Uneven distribution of the gravitational field
None of these
Aerodynamic forces

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Applied Mechanics and Graphic Statics
The displacement of a particle which moves along a straight line is given by S = 4t³ + 3t²- 10 where ‘S’ is in meters and t is in seconds. The time taken by the particle to acquire a velocity of 18 m/sec from rest, is

1 sec
1.2 sec
½ sec
1.5 sec

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Applied Mechanics and Graphic Statics
Instantaneous center is at infinity when the angular velocity is

Maximum
Minimum
Constant
Zero

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Applied Mechanics and Graphic Statics
When two forces, each equal to P, act at 90° to each other, then the resultant will be

2P
P/√2
P
P√2

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