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Engineering Mechanics

Engineering Mechanics
When a body of mass 'm' attains a velocity 'v' from rest in time 't', then the kinetic energy of translation is

mv2
0.5 mgv2
mgv2
0.5 mv2

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Engineering Mechanics
The forces which meet at one point, but their lines of action __________ on the same plane, are Known as non-coplanar concurrent forces.

None of these
Either A or B
Do not lie
Lie

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Engineering Mechanics
The unit of work in S.I. units is

kg-m
Newton
joule
erg

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

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Engineering Mechanics
A particle inside a hollow sphere of radius r, having coefficient of friction µ can rest up to height of

r/A
r/2
r/3
0.134 r

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Engineering Mechanics
The range of projectile on a downward inclined plane is ________ the range on upward inclined plane for the same velocity of projection and angle of projection.

None of These
More than
Less than
Equal to

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