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Engineering Mechanics

Engineering Mechanics
The range of projectile will be maximum for a given velocity of projectile, when the angle of projection (α) is

30° + β/2
45° + β/2
60° + β/2
β/2

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Engineering Mechanics
The forces, whose lines of action are parallel to each other and act in the same directions, are known as

Coplanar concurrent forces
Coplanar non-concurrent forces
Unlike parallel forces
Like parallel forces

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Engineering Mechanics
The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction in which the force acts. This statement is known as

Newton's third law of motion
None of these
Newton's first law of motion
Newton's second law of motion

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Engineering Mechanics
The equivalent length of a simple pendulum which gives the same frequency as compound pendulum is

(kG² + h²)/h²
h/(kG² + h²)
(kG² + h²)/h
h²/(kG² + h²)

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Engineering Mechanics
The centre of gravity of a right circular solid cone is at a distance of _________ from its base, measured along the vertical axis.(where h = Height of a right circular solid cone.)

h/2
h/4
h/6
h/3

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Engineering Mechanics
If u₁ and u₂ are the velocities of two moving bodies in the same direction before impact and v₁ and v₂ are their velocities after impact, then coefficient of restitution is given by

(v₁ - v₂)/(u₁ - u₂)
(u₁ - u₂)/(v₁ - v₂)
(u₂ + u₁)/(v₂ + v₁)
(v₂ - v₁)/(u₁ - u₂)

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