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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
A ball is dropped from a height of 16 m on a horizontal floor. If it rebounds to a height of 9 m after striking the floor, the coefficient of restitution between ball and floor is

43864
43924
43894
43834

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Applied Mechanics and Graphic Statics
For a self-locking machine, the efficiency should be

None of these
0.5
Less than 60%
More than 50%

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Applied Mechanics and Graphic Statics
The unit of Moment of Inertia of a body, is

m²
m⁴
m
m³

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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

½ l
l/√2
¾ l
2/√3 l

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Applied Mechanics and Graphic Statics
On a ladder resting on a rough ground and leaning against a smooth vertical wall, the force of friction acts

Perpendicular to the wall at its upper end
Downwards at its upper end
Zero at its upper end
Upwards at its upper end

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Applied Mechanics and Graphic Statics
The ratio of kinetic energy and potential energy of a simple harmonic oscillator, at a displacement equal to half its amplitude is given by

0.12569444444444
0.042361111111111
0.043055555555556
0.084027777777778

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