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Engineering Mechanics

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

mr²
2mr²/5
mr²/2
2mr²/3

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Engineering Mechanics
The algebraic sum of moments of the forces forming couple about any point in their plane is

Constant
Equal to the moment of the couple
Both of above are correct
Both of above are wrong

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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

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

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Engineering Mechanics
The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body.

None of these
Less than
Greater than
Equal to

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Engineering Mechanics
The velocity ratio of a differential wheel and axle with 'D' as the diameter of effort wheel and d1 and d2 as the diameters of larger and smaller axles respectively, is

D/(d₁ - d₂)
D/(d₁ + d₂)
2D/(d₁ + d₂)
2D/(d₁ - d₂)

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Engineering Mechanics
If two bodies having masses m1 and m2 (m1>m2) have equal kinetic energies, the momentum of body having mass m1 is _________ the momentum of body having mass m2.

Greater than
Less than
None of these
Equal to

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