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Engineering Mechanics

Engineering Mechanics
If the gravitational acceleration at any place is doubled, then the weight of a body will be

g
2g
√2.g
g/2

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

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Engineering Mechanics
The impact between two lead spheres is approximately equal to an __________ impact.

None of these
Inelastic
Elastic
Solid

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Engineering Mechanics
The centre of gravity of an isosceles triangle with base (p) and sides (q) from its base is

(p² - q²)/4
(4p² - q²)/6
(p² + q²)/4
[√(4p² - q²)]/6

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Engineering Mechanics
The total energy possessed by a system of moving bodies

Is constant at every instant
Is minimum in the start and maximum at the end
Is maximum in the start and minimum at the end
Varies from point to point

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Engineering Mechanics
If a number of coplanar forces acting at a point be in equilibrium, the sum of clockwise moments must be __________ the sum of anticlockwise moments, about any point.

Less than
Greater than
Equal to
None of these

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