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Engineering Mechanics

Engineering Mechanics
The coefficient of friction depends upon

All of these
Area of contact
Shape of the surfaces
Nature of surfaces

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Engineering Mechanics
The time of flight (t) of a projectile on an upward inclined plane is(where u = Velocity of projection, α = Angle of projection, and β = Inclination of the plane with the horizontal.)

t = 2u sin (α + β)/g cos β
t = 2u sin (α - β)/g cos β
t = g cos β/2u sin (α - β)
t = g cos β/2u sin (α + β)

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Engineering Mechanics
In order to determine the effects of a force, acting on a body, we must know

All of these
Magnitude of the force
Nature of the force i.e. whether the force is push or pull
Line of action of the force

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Engineering Mechanics
The velocity ratio for the first system of pulleys is (where n is the number of pulleys.)

n
n²
2n
2n - 1

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Engineering Mechanics
The maximum frictional force, which comes into play, when a body just begins to slide over the surface of the other body, is known as

Limiting friction
Static friction
Coefficient of friction
Dynamic friction

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Engineering Mechanics
The friction experienced by a body, when at rest, is known as

Static friction
Coefficient of friction
Limiting friction
Dynamic friction

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MORE MCQ ON Engineering Mechanics

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