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Engineering Mechanics

Engineering Mechanics
The moment of inertia of a solid cone of mass ‘m’ and base radius ‘r’ about its vertical axis is

2mr²/5
3mr²/5
4mr²/5
3mr²/10

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Engineering Mechanics
The velocity ratio of a first system of pulleys with 4 pulleys is

4
8
20
16

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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
Moment of inertia is the

Second moment of area
All of these
Second moment of mass
Second moment of force

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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.

Less than
Greater than
Equal to
None of these

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Engineering Mechanics
The moment of inertia of a thin disc of mass ‘m’ and radius ‘r’, about an axis through its center of gravity and perpendicular to the plane of the disc is

mr²/8
mr²/6
mr²/2
mr²/4

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