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Engineering Mechanics

Engineering Mechanics
The moment of inertia of a solid sphere of mass ‘m’ and radius ‘r’ is

2mr²/5
2mr²/3
mr²
mr²/2

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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
mr²/2
mr²/4

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Engineering Mechanics
The skidding away of the vehicle on a level circular path can be avoided if the force of friction between the wheels and the ground is __________ the centrifugal force.

Less than
Greater than
None of these
Equal to

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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

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

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Engineering Mechanics
The process of finding out the resultant force is called __________ of forces.

None of these
Composition
Resolution
Decomposition

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Engineering Mechanics
A particle moves along a straight line such that distance (x) traversed in 't' seconds is given by x = t² (t - 4), the acceleration of the particle will be given by the equation

6f - 8
3t² + 2t
6f - 4
6t² - 8t

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