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Engineering Mechanics

Engineering Mechanics
A smooth cylinder lying on its convex surface remains in __________ equilibrium.

Stable
Unstable
None of these
Neutral

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Engineering Mechanics
If a body is acted upon by a number of coplanar non-concurrent forces, it may

Rotate about itself without moving
Be completely at rest
Move in any one direction rotating about itself
All of these

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Engineering Mechanics
The center of gravity of a quadrant of a circle lies along its central radius (r) at a distance of

0.8 r
0.7 r
0.5 r
0.6 r

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Engineering Mechanics
When two elastic bodies collide with each other,

The two bodies will momentarily come to rest after collision
The two bodies tend to compress and deform at the surface of contact
All of these
The two bodies begin to regain their original shape

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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

0.5 Iω
Iω2
0.5 Iω2
Iω

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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.

Equal to
Less than
Greater than
None of these

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