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Engineering Mechanics

Engineering Mechanics
The moment of inertia of a solid sphere of mass ‘m’ and radius ‘r’ is

2mr²/5
2mr²/3
mr²
mr²/2

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Engineering Mechanics
If the number of pulleys in a system is equal to its velocity ratio, then it is a __________ system of pulleys.

Third
First
Second
None of these

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Engineering Mechanics
In a screw jack, the effort required to lower the load is __________ the effort required to raise the same load.

None of these
Less than
More than
Equal to

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Engineering Mechanics
When the spring of a watch is wound, it will possess

Heat energy
Electrical energy
Strain energy
Kinetic energy

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Engineering Mechanics
The forces which do not meet at one point and their lines of action do not lie on the same plane are known as

Coplanar concurrent forces
None of these
Non-coplanar concurrent forces
Coplanar non-concurrent forces

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Engineering Mechanics
The maximum acceleration of a particle moving with simple harmonic motion is

ω
ωr
ω²r
ω/r

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