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Engineering Mechanics

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

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

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Engineering Mechanics
The three forces of 100 N, 200 N and 300 N have their lines of action parallel to each other but act in the opposite directions. These forces are known as

Unlike parallel forces
Coplanar non-concurrent forces
Like parallel forces
Coplanar concurrent forces

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Engineering Mechanics
The centre of percussion of the homogeneous rod of length ‘L’ suspended at the top will be

3L/4
L/3
2L/3
L/2

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Engineering Mechanics
The periodic time of one oscillation for a simple pendulum is (where l = Length of the pendulum.)

(1/2π). √(g/l)
None of these
2π. √(l/g)
(1/2π). √(l/g)

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Engineering Mechanics
If a given force (or a given system of forces) acting on a body __________ the position of the body, but keeps it in equilibrium, then its effect is to produce internal stress in the body.

Does not change
Changes periodically
None of these
Change

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Engineering Mechanics
A smooth cylinder lying on a __________ is in neutral equilibrium.

Convex surface
None of these
Curved surface
Horizontal surface

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