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Engineering Mechanics

Engineering Mechanics
If the number of pulleys in a system is equal to its velocity ratio, then it is a __________ system of pulleys.

None of these
Third
Second
First

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Engineering Mechanics
The law of motion involved in the recoil of gun is

None of these
Newton's third law of motion
Newton's second law of motion
Newton's first law of motion

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Engineering Mechanics
The linear acceleration (a) of a body rotating along a circular path of radius (r) with an angular acceleration of α rad/s2, is

a = r / α
a = α/ r
a = α.r
None of these

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Engineering Mechanics
When two elastic bodies collide with each other,

The two bodies tend to compress and deform at the surface of contact
The two bodies begin to regain their original shape
All of these
The two bodies will momentarily come to rest after collision

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

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

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Engineering Mechanics
The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body.

Greater than
Less than
None of these
Equal to

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