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Engineering Mechanics

Engineering Mechanics
Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its C.G. and parallel to the base, is

bh3/12
bh3/4
bh3/8
bh3/36

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Engineering Mechanics
The friction experienced by a body, when at rest, is known as

Limiting friction
Static friction
Dynamic friction
Coefficient of friction

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Engineering Mechanics
The linear acceleration (a) of a body rotating along a circular path of radius (r) with an angular acceleration of α rad/s2, is

a = r / α
a = α/ r
a = α.r
None of these

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

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Engineering Mechanics
The law of motion involved in the recoil of gun is

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

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Engineering Mechanics
If the number of pulleys in a system is equal to its velocity ratio, then it is a __________ system of pulleys.

Second
First
Third
None of these

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