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Engineering Mechanics

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

ω²r
ωr
ω
ω/r

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

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Engineering Mechanics
Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the width (b), is

bd³/12
bd³/36
db³/36
db³/12

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Engineering Mechanics
Static friction is always __________ dynamic friction.

None of these
Equal to
Greater than
Less than

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Engineering Mechanics
In order to completely specify angular displacement by a vector, it must fix

All of these
Sense of angular displacement
Magnitude of angular displacement
Direction of the axis of rotation

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Engineering Mechanics
The resultant of two equal forces ‘P’ making an angle ‘θ’, is given by

2P sinθ/2
2P tanθ/2
2P cotθ/2
2P cosθ/2

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