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Engineering Mechanics

Engineering Mechanics
The angular velocity (in rad/s) of a body rotating at N revolutions per minute is

2πN/180
πN/60
2πN/60
πN/180

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Engineering Mechanics
When a body falls freely under gravitational force, it possesses __________ weight.

Minimum
Maximum
No
None of these

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Engineering Mechanics
The acceleration of a body sliding down an inclined surface is

g cosθ
None of these
g tanθ
g sinθ

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Engineering Mechanics
The centre of gravity of a uniform lamina lies at

The midpoint of its axis
The centre of heavy portion
The bottom surface
All of these

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Engineering Mechanics
The maximum velocity of a particle moving with simple harmonic motion is

ω2r
ω
ωr
ω/r

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

Downward at its upper end
Towards the wall at its upper end
Away from the wall at its upper end
Upward at its upper end

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