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Engineering Mechanics

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

Greater than
None of these
Equal to
Less than

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Engineering Mechanics
The linear velocity of a body rotating at ω rad/s along a circular path of radius r is given by

ω.r
ω².r
ω/r
ω²/r

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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
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

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Engineering Mechanics
The ratio of limiting friction and normal reaction is known as

Coefficient of friction
Angle of repose
Angle of friction
Sliding friction

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Engineering Mechanics
The centre of gravity of an isosceles triangle with base (p) and sides (q) from its base is

[√(4p² - q²)]/6
(p² + q²)/4
(4p² - q²)/6
(p² - q²)/4

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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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