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Engineering Mechanics

Engineering Mechanics
The moment of inertia of a sphere of mass 'm' and radius 'r', about an axis tangential to it, is

7mr²/3
2mr²/5
7mr²/5
2mr²/3

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Engineering Mechanics
The frequency of oscillation of a compound pendulum is (where kG = Radius of gyration about the centroidal axis, and h = Distance between the point of suspension and C.G. of the body.)

1/2π. √(kG² + h²/gh)
2π. √(kG² + h²/gh)
2π. √(gh/kG² + h²)
1/2π. √(gh/kG² + h²)

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Engineering Mechanics
The units of moment of inertia of mass are

kg/m
kg/m²
m²/kg
kg-m²

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Engineering Mechanics
The impact between two lead spheres is approximately equal to an __________ impact.

Solid
Inelastic
None of these
Elastic

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Engineering Mechanics
The unit of angular acceleration is

rad/s2
m/s2
m/s
N-m

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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/4
h/2
h/3
h/6

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