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Engineering Mechanics

Engineering Mechanics
The coefficient of friction depends upon

Area of contact
Nature of surfaces
All of these
Shape of the surfaces

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Engineering Mechanics
The velocity ratio of a differential pulley block with D and d as the diameters of larger and smaller pulley, is

D/(D - d)
2D/(D + d)
2D/(D - d)
D/(D + d)

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Engineering Mechanics
The moment of inertia of a thin spherical shell of mass m and radius r, about its diameter is

2mr²/5
mr²/3
2mr²/3
3mr²/5

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Engineering Mechanics
The velocity ratio for the third system of pulleys is

2n - 1
2n
n²
n

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Engineering Mechanics
The process of finding out the resultant force is called __________ of forces.

Composition
Decomposition
None of these
Resolution

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Engineering Mechanics
The forces, whose lines of action are parallel to each other and act in the same directions, are known as

Like parallel forces
Coplanar concurrent forces
Coplanar non-concurrent forces
Unlike parallel forces

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