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Engineering Mechanics

Engineering Mechanics
The center of gravity of a semi-circle lies at a distance of __________ from its base measured along the vertical radius.

3r/4π
8r/3
3r/ 8
4r/ 3π

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Engineering Mechanics
The centre of gravity of an isosceles triangle with base (p) and sides (q) from its base is

(4p² - q²)/6
(p² + q²)/4
[√(4p² - q²)]/6
(p² - q²)/4

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Engineering Mechanics
The centre of gravity of a right circular solid cone is at a distance of _________ from its base, measured along the vertical axis.(where h = Height of a right circular solid cone.)

h/2
h/4
h/6
h/3

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Engineering Mechanics
The algebraic sum of moments of the forces forming couple about any point in their plane is

Both of above are correct
Equal to the moment of the couple
Constant
Both of above are wrong

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Engineering Mechanics
The forces, which meet at one point, but their lines of action do not lie in a plane, are called

Non-coplanar non-concurrent forces
Coplanar non-concurrent forces
Non-coplanar concurrent forces
Intersecting forces

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Engineering Mechanics
In order to determine the effects of a force, acting on a body, we must know

Nature of the force i.e. whether the force is push or pull
Magnitude of the force
All of these
Line of action of the force

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