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Engineering Mechanics

Engineering Mechanics
In a screw jack, the effort required to lower the load is __________ the effort required to raise the same load.

None of these
More than
Equal to
Less than

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Engineering Mechanics
The acceleration of a particle moving with simple harmonic motion, at any instant is given by

ω2.y
ω2/y
ω3.y
ω.y

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Engineering Mechanics
Two forces are acting at an angle of 120°. The bigger force is 40 N and the resultant is perpendicular to the smaller one. The smaller force is

120 N
None of the listed here
20 N
40 N

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Engineering Mechanics
The rate of change of displacement of a body is called

Velocity
Acceleration
None of these
Momentum

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Engineering Mechanics
One joule is equal to

10 N-m
0.1 N-m
1 N-m
100 N-m

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Engineering Mechanics
Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its vertex and parallel to the base, is __________ than that passing through its C.G. and parallel to the base.

Four times
Two times
Six times
Nine times

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