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Engineering Mechanics

Engineering Mechanics
The velocity ratio of a first system of pulleys with 4 pulleys is

8
4
16
20

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Engineering Mechanics
The velocity of a particle (v) moving with simple harmonic motion, at any instant is given by (where, r = Amplitude of motion, and y = Displacement of the particle from mean position.)

ω.√(y² - r²)
ω².√(r² - y²)
ω².√(y² - r²)
ω.√(r² - y²)

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Engineering Mechanics
Coefficient of friction depends upon

Nature of surface only
None of these
Area of contact only
Both (A) and (B)

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Engineering Mechanics
The three forces of 100 N, 200 N and 300 N have their lines of action parallel to each other but act in the opposite directions. These forces are known as

Like parallel forces
Unlike parallel forces
Coplanar concurrent forces
Coplanar non-concurrent forces

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Engineering Mechanics
A couple produces

None of these
Translatory motion
Rotational motion
Combined translatory and rotational motion

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

None of these
Solid
Inelastic
Elastic

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