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Engineering Mechanics

Engineering Mechanics
The resultant of two forces P and Q (such that P > Q) acting along the same straight line, but in opposite direction, is given by

Q / P
P / Q
P - Q
P + Q

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Engineering Mechanics
The impact between two lead spheres is approximately equal to an __________ impact.

None of these
Elastic
Solid
Inelastic

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Engineering Mechanics
On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be

Away from the wall at its upper end
Downwards at its upper end
Upwards at its upper end
Towards the wall at its upper end

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Engineering Mechanics
The range of projectile on a downward inclined plane is ________ the range on upward inclined plane for the same velocity of projection and angle of projection.

More than
Less than
None of These
Equal to

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Engineering Mechanics
The unit of angular velocity is

Revolutions/min
Both (B) and (C)
m/min
rad/s

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

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