Exercise: Engineering Mechanics

Questions for: Engineering Mechanics

The moment of inertia of a thin rod of mass m and length l,about an axis through its centre of gravity and perpendicular to its length is
A:
ml2/4
B:
ml2/ 6
C:
ml2/8
D:
ml2/12
Answer: D
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The unit of moment of inertia of an area is
A:
kg-m2
B:
kg-m-s2
C:
kg/m2
D:
m4
Answer: D
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The acceleration of a particle moving with simple harmonic motion is proportional to the displacement of the particle from the mean position.
A:
True
B:
False
C:
D:
Answer: A
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In a framed structure, as shown in the below figure, the forces in the members AB and BC are respectively
A:
(tensile) and 2W (compressive)
B:
2W(tensile) and (compressive)
C:
(tensile) and (compressive)
D:
none of the above
Answer: A
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In collision of elastic bodies, the coefficient of restitution is the ratio of the relative velocity after impact to the relative velocity before impact.
A:
True
B:
False
C:
D:
Answer: A
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