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Engineering Mechanics

Engineering Mechanics
Mass moment of inertia of a thin rod about its one end is ___________ the mass moment of inertia of the same rod about its mid-point

Twice
Thrice
Same as
Four times

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Engineering Mechanics
The time of flight of a projectile on downward inclined plane depends upon

Angle of inclination of the plane
None of these
Angle of projection
Both (A) and (B)

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Engineering Mechanics
A cable with a uniformly distributed load per horizontal meter run will take the following shape

Parabola
Hyperbola
Straight line
Elliptical

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Engineering Mechanics
A body of weight 'W' is required to move up on rough inclined plane whose angle of inclination with the horizontal is 'α'. The effort applied parallel to the plane is given by (where μ = tanφ = Coefficient of friction between the plane and the body.)

P = W (cosα + μsinα)
P = W tanα
P = W (sinα + μcosα)
P = W tan (α + φ)

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Engineering Mechanics
The velocity ratio for the first system of pulleys is (where n is the number of pulleys.)

2n
2n - 1
n
n²

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Engineering Mechanics
The horizontal range of a projectile (R) is given by

R = u² sinα/g
R = u² cosα/g
R = u² sin2α/g
R = u² cos2α/g

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