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Engineering Mechanics

Engineering Mechanics
Moment of inertia is the

All of these
Second moment of mass
Second moment of area
Second moment of force

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Engineering Mechanics
The ratio of limiting friction and normal reaction is known as

Angle of friction
Angle of repose
Sliding friction
Coefficient of friction

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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

mgv2
mv2
0.5 mv2
0.5 mgv2

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Engineering Mechanics
According to parallel axis theorem, the moment of inertia of a section about an axis parallel to the axis through center of gravity (i.e. IP) is given by(where, A = Area of the section, IG = Moment of inertia of the section about an axis passing through its C.G., and h = Distance between C.G. and the parallel axis.)

IP = Ah2 / IG
IP = IG - Ah2
IP = IG / Ah2
IP = IG + Ah2

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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
The two bodies will momentarily come to rest after collision
All of these
The two bodies begin to regain their original shape

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Engineering Mechanics
If the number of pulleys in a system is equal to its velocity ratio, then it is a __________ system of pulleys.

First
Second
Third
None of these

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