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Engineering Mechanics

Engineering Mechanics
The force, by which the body is attracted, towards the center of the earth, is called

Mass
Momentum
Impulsive force
Weight

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Engineering Mechanics
During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.

Equal to
Greater than
Equal and opposite to
Less than

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Engineering Mechanics
The periodic time of one oscillation for a simple pendulum is (where l = Length of the pendulum.)

(1/2π). √(g/l)
(1/2π). √(l/g)
2π. √(l/g)
None of these

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Engineering Mechanics
A framed structure is perfect, if the number of members are __________ (2j - 3), where j is the number of joints.

Equal to
None of these
Greater than
Less than

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

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Engineering Mechanics
The ideal angle of banking provided on the curves on roads depends upon

Weight of the vehicle
Nature of the road surface
(Velocity)2 of the vehicle
Coefficient of friction between the road and vehicle contact point

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