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Engineering Mechanics

Engineering Mechanics
The amplitude is always __________ radius of the circle.

Equal to
Less than
None of these
Greater than

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Engineering Mechanics
A pendulum which executes one beat per second is known as

Simple pendulum
Second's pendulum
Compound pendulum
Torsional pendulum

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Engineering Mechanics
The frequency of oscillation of a compound pendulum is (where kG = Radius of gyration about the centroidal axis, and h = Distance between the point of suspension and C.G. of the body.)

2π. √(kG² + h²/gh)
1/2π. √(kG² + h²/gh)
2π. √(gh/kG² + h²)
1/2π. √(gh/kG² + h²)

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Engineering Mechanics
The velocity ratio of a simple wheel and axle with D and d as the diameters of effort wheel and load axle, is

D × d
D - d
D + d
D / d

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Engineering Mechanics
The time of flight (t) of a projectile on a horizontal plane is given by

t = 2u. tanα/g
t = 2u. cosα/g
t = 2u. sinα/g
t = 2u/g.sinα

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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

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

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