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Engineering Mechanics

Engineering Mechanics
The maximum height of a projectile on a horizontal plane, is

u² sin²α/g
u² sin²α/2g
u² cos²α/2g
u² cos²α/g

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Engineering Mechanics
If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is

g/2
g/3
g/4
None of these

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Engineering Mechanics
When the lift is moving upwards with some acceleration, the pressure exerted by a man is __________ to its acceleration.

Cube root
Inversely proportional
None of these
Directly proportional

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Engineering Mechanics
The moment of inertia of a thin spherical shell of mass m and radius r, about its diameter is

2mr²/5
3mr²/5
2mr²/3
mr²/3

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Engineering Mechanics
When a body falls freely under gravitational force, it possesses __________ weight.

None of these
Maximum
No
Minimum

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Engineering Mechanics
Three forces acting on a rigid body are represented in magnitude, direction and line of action by the three sides of a triangle taken in order. The forces are equivalent to a couple whose moment is equal to

None of these
Area of the triangle
Twice the area of the triangle
Half the area of the triangle

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