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Engineering Mechanics

Engineering Mechanics
The total motion possessed by a body, is called

Weight
Mass
Momentum
Impulsive force

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Engineering Mechanics
The three forces of 100 N, 200 N and 300 N have their lines of action parallel to each other but act in the opposite directions. These forces are known as

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

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Engineering Mechanics
A body of weight 'W' is required to move up on rough inclined plane whose angle of inclination with the horizontal is 'α'. The effort applied parallel to the plane is given by (where μ = tanφ = Coefficient of friction between the plane and the body.)

P = W tanα
P = W (sinα + μcosα)
P = W (cosα + μsinα)
P = W tan (α + φ)

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Engineering Mechanics
The process of finding out the resultant force is called __________ of forces.

None of these
Resolution
Composition
Decomposition

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Engineering Mechanics
The resultant of the two forces ‘P’ and ‘Q’ is ‘R’. If ‘Q’ is doubled, the new resultant is perpendicular to ‘P’. Then

Q = 2R
P = Q
Q = R
None of the listed here

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

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

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