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Engineering Mechanics

Engineering Mechanics
Moment of inertia is the

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

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Engineering Mechanics
When a body of mass moment of inertia 'I' (about a given axis) is rotated about that axis with an angular velocity to, then the kinetic energy of rotation is

Iω2
0.5 Iω
Iω
0.5 Iω2

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Engineering Mechanics
The forces which meet at one point, but their lines of action __________ on the same plane, are Known as non-coplanar concurrent forces.

Lie
None of these
Do not lie
Either A or B

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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
A smooth cylinder lying on a __________ is in neutral equilibrium.

None of these
Convex surface
Curved surface
Horizontal surface

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Engineering Mechanics
The skidding away of the vehicle on a level circular path can be avoided if the force of friction between the wheels and the ground is __________ the centrifugal force.

Less than
None of these
Equal to
Greater than

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