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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
The force polygon representing a set of forces in equilibrium is a

Triangle
Closed polygon
Parallelogram
Open polygon

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Applied Mechanics and Graphic Statics
The height at which the end of a rope of length ‘l’ should be tied so that a man pulling at the other end may have the greatest tendency to overturn the pillar, is

l/√2
¾ l
2/√3 l
½ l

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Applied Mechanics and Graphic Statics
The centre of gravity of a plane lamina will not be at its geometrical centre if it is a

Rectangle
Right angled triangle
Circle
Equilateral triangle

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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

43895
43926
43894
43954

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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
Imaginary work
Negative work
None of these

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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

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

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