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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.

8r/3
3r/ 8
4r/ 3π
3r/4π

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Engineering Mechanics
A smooth cylinder lying on a __________ is in neutral equilibrium.

Curved surface
Convex surface
Horizontal surface
None of these

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Engineering Mechanics
The maximum height of a projectile on a horizontal plane, is

u² sin²α/2g
u² cos²α/2g
u² sin²α/g
u² cos²α/g

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Engineering Mechanics
A force while acting on a body may

All of these
Give rise to the internal stresses in it
Balance the forces, already acting on it
Change its motion

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Engineering Mechanics
When a body of mass moment of inertia 'I' (about a given axis) is rotated about that axis with an angular velocity to, then the kinetic energy of rotation is

Iω
0.5 Iω
0.5 Iω2
Iω2

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Engineering Mechanics
The range of a projectile is maximum, when the angle of projection is

45°
30°
60°
90°

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MORE MCQ ON Engineering Mechanics

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