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Engineering Mechanics

Engineering Mechanics
Moment of inertia is the

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

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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 = IG / Ah2
IP = Ah2 / IG

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Engineering Mechanics
The acceleration of a body sliding down an inclined surface is

None of these
g cosθ
g sinθ
g tanθ

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Engineering Mechanics
The forces which do not meet at one point and their lines of action do not lie on the same plane are known as

Non-coplanar concurrent forces
Coplanar non-concurrent forces
Coplanar concurrent forces
None of these

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Engineering Mechanics
The force required to move the body up the plane will be minimum if it makes an angle with the inclined plane __________ the angle of friction.

None of these
Greater than
Equal to
Less than

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Engineering Mechanics
The mechanical advantage of a lifting machine is the ratio of

All of these
Output to the input
Distance moved by effort to the distance moved by load
Load lifted to the effort applied

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