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Engineering Mechanics

Engineering Mechanics
The horizontal range of a projectile (R) is given by

R = u² sinα/g
R = u² sin2α/g
R = u² cosα/g
R = u² cos2α/g

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Engineering Mechanics
The periodic time of a particle with simple harmonic motion is _________ proportional to the angular velocity.

None of these
Inversely
Directly
Square root

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Engineering Mechanics
When the lift is moving upwards with some acceleration, the pressure exerted by a man is __________ to its acceleration.

Cube root
Inversely proportional
None of these
Directly proportional

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Engineering Mechanics
The center of gravity of a semi-circle lies at a distance of __________ from its base measured along the vertical radius.

3r/4π
3r/ 8
4r/ 3π
8r/3

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Engineering Mechanics
In order to double the period of simple pendulum, the length of the string should be

Doubled
Halved
None of these
Quadrupled

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Engineering Mechanics
A couple produces

Translatory motion
Combined translatory and rotational motion
None of these
Rotational motion

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