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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

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

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Engineering Mechanics
In order to double the period of simple pendulum, the length of the string should be

None of these
Quadrupled
Doubled
Halved

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Engineering Mechanics
Concurrent forces are those forces whose lines of action

Meet at one point
Lie on the same line
None of these
Meet on the same plane

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Engineering Mechanics
The time of flight (t) of a projectile on a horizontal plane is given by

t = 2u. cosα/g
t = 2u. tanα/g
t = 2u/g.sinα
t = 2u. sinα/g

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

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Engineering Mechanics
The force, by which the body is attracted, towards the center of the earth, is called

Mass
Weight
Impulsive force
Momentum

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MORE MCQ ON Engineering Mechanics

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