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Engineering Mechanics

Engineering Mechanics
The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body.

None of these
Greater than
Equal to
Less than

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Engineering Mechanics
The periodic time (T) is given by (where, ω = Angular velocity of particle in rad/s.)

2π × ω
π/ω
ω/2π
2π/ω

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Engineering Mechanics
The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is known as

Principle of independence of forces
Principle of resolution of forces
None of these
Principle of transmissibility of forces

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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

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

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Engineering Mechanics
The acceleration of a particle moving with simple harmonic motion, at any instant is given by

ω2.y
ω3.y
ω.y
ω2/y

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Engineering Mechanics
The friction experienced by a body, when at rest, is known as

Static friction
Coefficient of friction
Limiting friction
Dynamic friction

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