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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

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

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Engineering Mechanics
The center of percussion of a solid cylinder of radius ‘r’ resting on a horizontal plane will be

r/2
3r/2
r/A
2r/3

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

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Engineering Mechanics
The time of flight of a projectile on downward inclined plane depends upon

None of these
Both (A) and (B)
Angle of projection
Angle of inclination of the plane

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Engineering Mechanics
The point, through which the whole weight of the body acts, irrespective of its position, is known as

Moment of inertia
Center of mass
Center of percussion
Center of gravity

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Engineering Mechanics
If two bodies having masses m1 and m2 (m1>m2) have equal kinetic energies, the momentum of body having mass m1 is _________ the momentum of body having mass m2.

Greater than
Less than
None of these
Equal to

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