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Engineering Mechanics

Engineering Mechanics
The unit of work in S.I. units is

joule
kg-m
erg
Newton

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Engineering Mechanics
The motion of a particle round a fixed axis is

Translatory
Translatory as well as rotary
Circular
Rotary

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Engineering Mechanics
The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction in which the force acts. This statement is known as

None of these
Newton's third law of motion
Newton's first law of motion
Newton's second law of motion

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Engineering Mechanics
The process of finding out the resultant force is called __________ of forces.

None of these
Decomposition
Resolution
Composition

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Engineering Mechanics
The periodic time of a particle with simple harmonic motion is _________ proportional to the angular velocity.

None of these
Square root
Inversely
Directly

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Engineering Mechanics
In a screw jack, the effort required to lift the load is given by (where W = Load lifted, α = Helix angle, and φ = Angle of friction.)

P = W tan (α + φ)
P = W tan (φ - α)
P = W cos (α + φ)
P = W tan (α - φ)

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