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Engineering Mechanics

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

Solid
Elastic
None of these
Inelastic

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Engineering Mechanics
The range of projectile (R) on an upward inclined plane is

g. cos² β/2u². sin (α - β). cos α
g. cos² β/2u². sin (α + β). cos α
2u². sin (α - β). cos α/g. cos² β
2u². sin (α + β). cos α/g. cos² β

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Engineering Mechanics
Two balls of equal mass and of perfectly elastic material are lying on the floor. One of the balls with velocity ‘v’ is made to strike the second ball. Both the balls after impact will move with a velocity

v/8
v
v/2
v/4

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Engineering Mechanics
The velocity ratio of a simple wheel and axle with D and d as the diameters of effort wheel and load axle, is

D + d
D - d
D / d
D × d

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Engineering Mechanics
The angular velocity (in rad/s) of a body rotating at N revolutions per minute is

πN/60
2πN/180
2πN/60
πN/180

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Engineering Mechanics
Coplanar non-concurrent forces are those forces which __________ at one point, but their lines of action lie on the same plane.

Meet
Either ‘A’ or ‘B’
None of these
Do not meet

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