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Engineering Mechanics

Engineering Mechanics
The moment of inertia of a square of side (a) about an axis through its center of gravity is

a4/36
a4/12
a4/4
a4/8

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Engineering Mechanics
Moment of inertia of a triangular section of base (b) and height (h) about an axis through its base, is

bh3/4
bh3/36
bh3/12
bh3/8

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Engineering Mechanics
The total energy possessed by a system of moving bodies

Is constant at every instant
Is minimum in the start and maximum at the end
Is maximum in the start and minimum at the end
Varies from point to point

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Engineering Mechanics
The range of projectile will be maximum for a given velocity of projectile, when the angle of projection (α) is

45° + β/2
β/2
30° + β/2
60° + β/2

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

Newton
kg-m
joule
erg

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Engineering Mechanics
Two forces are acting at an angle of 120°. The bigger force is 40 N and the resultant is perpendicular to the smaller one. The smaller force is

40 N
None of the listed here
20 N
120 N

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