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Engineering Mechanics

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

Stable
None of these
Neutral
Unstable

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Engineering Mechanics
Centre of gravity of a solid cone lies on the axis at the height

Three eighth of the total height above the base
One fourth of the total height above base
One-half of the total height above base
One third of the total height above base

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Engineering Mechanics
The maximum frictional force which comes into play when a body just begins to slide over another surface is called

Kinematic friction
Sliding friction
Rolling friction
Limiting friction

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Engineering Mechanics
The bodies which rebound after impact are called

Inelastic bodies
Elastic bodies
None of these
Neither elastic nor inelastic bodies

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Engineering Mechanics
If a number of forces are acting at a point, their resultant will be inclined at an angle 'θ' with the horizontal, such that

tanθ = ΣH/ΣV
tanθ = ΣV × ΣH
tanθ = √(ΣV + ΣH)
tanθ = ΣV/ΣH

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Engineering Mechanics
The forces, which meet at one point, but their lines of action do not lie in a plane, are called

Non-coplanar concurrent forces
Coplanar non-concurrent forces
Intersecting forces
Non-coplanar non-concurrent forces

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