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Engineering Mechanics

Engineering Mechanics
The velocity ratio for the third system of pulleys is

2n - 1
2n
n
n²

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Engineering Mechanics
The motion of a wheel of a car is

Purely translation
Purely rotational
None of the listed here
Combined translation and rotational

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Engineering Mechanics
The moment of inertia of a thin spherical shell of mass m and radius r, about its diameter is

mr²/3
3mr²/5
2mr²/3
2mr²/5

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

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

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Engineering Mechanics
In order to completely specify angular displacement by a vector, it must fix

Sense of angular displacement
Magnitude of angular displacement
All of these
Direction of the axis of rotation

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Engineering Mechanics
The moment of inertia of a solid cylinder of mass 'm', radius 'r' and length 'l' about the longitudinal axis or polar axis is

mr²/8
mr²/6
mr²/4
mr²/2

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