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Engineering Mechanics

Engineering Mechanics
Mass moment of inertia of a thin rod about its one end is ___________ the mass moment of inertia of the same rod about its mid-point

Four times
Twice
Thrice
Same as

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Engineering Mechanics
The coefficient of friction depends upon

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

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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
The mechanical advantage of a lifting machine is the ratio of

Distance moved by effort to the distance moved by load
All of these
Output to the input
Load lifted to the effort applied

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Engineering Mechanics
The unit of moment of inertia of an area is

kg-m-s2
kg/m2
kg-m2
m4

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Engineering Mechanics
The moment of inertia of a sphere of mass 'm' and radius 'r', about an axis tangential to it, is

7mr²/3
2mr²/5
2mr²/3
7mr²/5

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