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Engineering Mechanics

Engineering Mechanics
If the body falls freely under gravity, then the gravitational acceleration is taken as

+8.9 m/s2
-9.8 m/s2
+9.8 m/s2
-8.9 m/s2

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Engineering Mechanics
Concurrent forces are those forces whose lines of action

Meet on the same plane
None of these
Meet at one point
Lie on the same line

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Engineering Mechanics
If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is

120°
30°
60°
90°

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Engineering Mechanics
The maximum velocity of a particle moving with simple harmonic motion is

ω/r
ω2r
ωr
ω

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Engineering Mechanics
A particle moves along a straight line such that distance (x) traversed in 't' seconds is given by x = t² (t - 4), the acceleration of the particle will be given by the equation

6t² - 8t
6f - 4
3t² + 2t
6f - 8

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Engineering Mechanics
A screw jack used for lifting the loads is

A reversible machine
An ideal machine
None of these
A non-reversible machine

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