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Engineering Mechanics

Engineering Mechanics
The velocity ratio for the third system of pulleys is

n
2n - 1
n²
2n

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

Compound pendulum
Torsional pendulum
Second's pendulum
Simple pendulum

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Engineering Mechanics
Centre of gravity of a solid cone lies on the axis at the height

One fourth of the total height above base
One third of the total height above base
One-half of the total height above base
Three eighth of the total height above the base

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Engineering Mechanics
The maximum height of a projectile on a horizontal plane, is

u² cos²α/g
u² sin²α/2g
u² sin²α/g
u² cos²α/2g

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Engineering Mechanics
The bodies which rebound after impact are called

Elastic bodies
None of these
Inelastic bodies
Neither elastic nor inelastic bodies

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Engineering Mechanics
The moment of inertia of a solid cone of mass ‘m’ and base radius ‘r’ about its vertical axis is

3mr²/5
3mr²/10
2mr²/5
4mr²/5

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