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Engineering Mechanics

Engineering Mechanics
The center of gravity of a quadrant of a circle lies along its central radius (r) at a distance of

0.5 r
0.8 r
0.7 r
0.6 r

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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

mr²/8
mr²/2
mr²/4
mr²/6

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Engineering Mechanics
If u₁ and u₂ are the velocities of two moving bodies in the same direction before impact and v₁ and v₂ are their velocities after impact, then coefficient of restitution is given by

(v₂ - v₁)/(u₁ - u₂)
(v₁ - v₂)/(u₁ - u₂)
(u₁ - u₂)/(v₁ - v₂)
(u₂ + u₁)/(v₂ + v₁)

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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

mv2
0.5 mv2
mgv2
0.5 mgv2

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Engineering Mechanics
The motion of a wheel of a car is

None of the listed here
Purely rotational
Purely translation
Combined translation and rotational

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Engineering Mechanics
The process of finding out the resultant force is called __________ of forces.

Composition
Decomposition
Resolution
None of these

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MORE MCQ ON Engineering Mechanics

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