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Engineering Mechanics

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

g cosθ
g sinθ
None of these
g tanθ

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Engineering Mechanics
On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be

Zero at its upper end
Upwards at its upper end
Downwards at its upper end
Perpendicular to the wall at its upper end

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Engineering Mechanics
A cable with a uniformly distributed load per horizontal meter run will take the following shape

Parabola
Hyperbola
Straight line
Elliptical

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Engineering Mechanics
The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body.

Less than
Greater than
Equal to
None of these

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Engineering Mechanics
The range of projectile (R) on an upward inclined plane is

g. cos² β/2u². sin (α - β). cos α
2u². sin (α - β). cos α/g. cos² β
2u². sin (α + β). cos α/g. cos² β
g. cos² β/2u². sin (α + β). cos α

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Engineering Mechanics
Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the width (b), is

db³/36
bd³/12
bd³/36
db³/12

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