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Engineering Mechanics

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

Impulsive force
Momentum
Weight
Mass

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Engineering Mechanics
The maximum acceleration of a particle moving with simple harmonic motion is

ω/r
ω
ω²r
ωr

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Engineering Mechanics
Work done is said to be zero, when

Either (A) or (B)
Some force acts on a body, but displacement is zero
None of these
No force acts on a body but some displacement takes place

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Engineering Mechanics
If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is

120°
90°
30°
60°

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Engineering Mechanics
The velocity of a particle moving with simple harmonic motion is _________ at the mean position.

Minimum
Maximum
Zero
None of these

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Engineering Mechanics
According to parallel axis theorem, the moment of inertia of a section about an axis parallel to the axis through center of gravity (i.e. IP) is given by(where, A = Area of the section, IG = Moment of inertia of the section about an axis passing through its C.G., and h = Distance between C.G. and the parallel axis.)

IP = IG + Ah2
IP = IG / Ah2
IP = Ah2 / IG
IP = IG - Ah2

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