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Engineering Mechanics

Engineering Mechanics
The moment of inertia of a square of side a about its diagonal is

a⁴/12
a⁴/16
a³/12
a²/8

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Engineering Mechanics
The rate of change of displacement of a body is called

Momentum
Acceleration
None of these
Velocity

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Engineering Mechanics
The centre of gravity of a right circular solid cone is at a distance of _________ from its base, measured along the vertical axis.(where h = Height of a right circular solid cone.)

h/2
h/6
h/3
h/4

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Engineering Mechanics
A ladder is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act

Upward at its upper end
Zero at its upper end
Downward at its upper end
Perpendicular to the wall at its upper end

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Engineering Mechanics
A spherical body is symmetrical about its perpendicular axis. According to Routh's rule, the moment of inertia of a body about an axis passing through its centre of gravity is (where, M = Mass of the body, and S = Sum of the squares of the two semi-axes.)

MS/3
MS/5
MS/4
None of these

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Engineering Mechanics
The maximum mechanical advantage of a lifting machine is

1 + m
1 / m
m
1 - m

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