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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.

4r/ 3π
3r/ 8
8r/3
3r/4π

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Engineering Mechanics
The maximum frictional force, which comes into play, when a body just begins to slide over the surface of the other body, is known as

Static friction
Coefficient of friction
Dynamic friction
Limiting friction

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Engineering Mechanics
The velocity of a body on reaching the ground from a height h, is

√(2gh)
2g.√h
√(gh)
2.√(gh)

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Engineering Mechanics
The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is known as

Principle of independence of forces
None of these
Principle of resolution of forces
Principle of transmissibility of forces

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Engineering Mechanics
Moment of inertia of a circular section about an axis perpendicular to the section is

πd4/32
πd3/32
πd4/64
πd3/16

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Engineering Mechanics
The bodies which rebound after impact are called

Neither elastic nor inelastic bodies
Elastic bodies
None of these
Inelastic bodies

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