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Engineering Mechanics

Engineering Mechanics
The unit of force in S.I. system of units is

Kilogram
Watt
Dyne
Newton

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

0.5 mgv2
0.5 mv2
mv2
mgv2

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Engineering Mechanics
The velocity ratio of a simple wheel and axle with D and d as the diameters of effort wheel and load axle, is

D - d
D / d
D × d
D + d

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Engineering Mechanics
The moment of inertia of a square of side a about its diagonal is

a⁴/16
a⁴/12
a³/12
a²/8

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Engineering Mechanics
When two elastic bodies collide with each other,

The two bodies tend to compress and deform at the surface of contact
All of these
The two bodies will momentarily come to rest after collision
The two bodies begin to regain their original shape

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Engineering Mechanics
The horizontal range of a projectile (R) is given by

R = u² cosα/g
R = u² sinα/g
R = u² cos2α/g
R = u² sin2α/g

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