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Engineering Mechanics

Engineering Mechanics
The unit of moment of inertia of an area is

kg/m2
m4
kg-m2
kg-m-s2

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Engineering Mechanics
The time of flight (t) of a projectile on an upward inclined plane is(where u = Velocity of projection, α = Angle of projection, and β = Inclination of the plane with the horizontal.)

t = g cos β/2u sin (α - β)
t = 2u sin (α - β)/g cos β
t = g cos β/2u sin (α + β)
t = 2u sin (α + β)/g cos β

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Engineering Mechanics
The range of a projectile is maximum, when the angle of projection is

30°
45°
60°
90°

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Engineering Mechanics
The moment of inertia of a thin disc of mass ‘m’ and radius ‘r’, about an axis through its center of gravity and perpendicular to the plane of the disc is

mr²/2
mr²/6
mr²/4
mr²/8

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Engineering Mechanics
The energy possessed by a body, for doing work by virtue of its position, is called

Chemical energy
Electrical energy
Potential energy
Kinetic energy

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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

ω²/r
ω/r
ω².r
ω.r

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MORE MCQ ON Engineering Mechanics

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