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Engineering Mechanics

Engineering Mechanics
The moment of inertia of a sphere of mass 'm' and radius 'r', about an axis tangential to it, is

2mr²/5
2mr²/3
7mr²/3
7mr²/5

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Engineering Mechanics
When two elastic bodies collide with each other,

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

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Engineering Mechanics
The point, through which the whole weight of the body acts, irrespective of its position, is known as

Center of mass
Center of gravity
Center of percussion
Moment of inertia

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Engineering Mechanics
The bodies which rebound after impact are called

Inelastic bodies
Elastic bodies
None of these
Neither elastic nor inelastic bodies

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Engineering Mechanics
The maximum efficiency of a lifting machine is

1/(m × V.R.)
V.R./m
1/m
m/V.R.

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Engineering Mechanics
The centre of percussion of the homogeneous rod of length ‘L’ suspended at the top will be

3L/4
L/3
L/2
2L/3

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MORE MCQ ON Engineering Mechanics

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