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Engineering Mechanics

Engineering Mechanics
The moment of inertia of a solid cone of mass ‘m’ and base radius ‘r’ about its vertical axis is

4mr²/5
3mr²/10
2mr²/5
3mr²/5

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Engineering Mechanics
Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the width (b), is

db³/12
bd³/36
db³/36
bd³/12

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Engineering Mechanics
The periodic time of one oscillation for a simple pendulum is (where l = Length of the pendulum.)

(1/2π). √(g/l)
None of these
(1/2π). √(l/g)
2π. √(l/g)

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

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

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Engineering Mechanics
If the gravitational acceleration at any place is doubled, then the weight of a body will be

2g
√2.g
g/2
g

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Engineering Mechanics
The algebraic sum of moments of the forces forming couple about any point in their plane is

Both of above are wrong
Equal to the moment of the couple
Constant
Both of above are correct

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MORE MCQ ON Engineering Mechanics

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