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Engineering Mechanics

Engineering Mechanics
Which of the following are vector quantities?

All of these
Linear acceleration
Linear velocity
Linear displacement

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Engineering Mechanics
The velocity of a body on reaching the ground from a height h, is

√(2gh)
√(gh)
2g.√h
2.√(gh)

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

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Engineering Mechanics
Moment of inertia is the

Second moment of area
Second moment of mass
All of these
Second moment of force

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Engineering Mechanics
Static friction is always __________ dynamic friction.

Less than
Greater than
Equal to
None of these

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Engineering Mechanics
The acceleration of a particle moving with simple harmonic motion, at any instant is given by

ω3.y
ω.y
ω2.y
ω2/y

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