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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

Imaginary work
Virtual work
Negative work
None of these

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Applied Mechanics and Graphic Statics
The centre of gravity of a triangle is at the point where three

Medians of the triangle meet
None of these
Perpendicular bisectors of the sides of the triangle meet
Bisectors of the angle of the triangle meet

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Applied Mechanics and Graphic Statics
In SI units, the units of force and energy are respectively

Dyne and erg
Newton and joule
Newton and watt
kg wt and joule

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Applied Mechanics and Graphic Statics
The motion of a particle is described by the relation x = t²- 10t + 30, where x is in meters and t in seconds. The total distance travelled by the particle from t = 0 to t = 10 seconds would be

Zero
60 m
30 m
50 m

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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
½ sec
1.2 sec
1.5 sec

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Applied Mechanics and Graphic Statics
Two shots fired simultaneously from the top and bottom of a vertical tower with elevations of 30° and 45° respectively strike a target simultaneously. If horizontal distance of the target from the tower is 1000 m, the height of the tower is

400 m
350 m
375 m
425 m

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