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

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Engineering Mechanics
When two elastic bodies collide with each other,

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

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Engineering Mechanics
The friction experienced by a body, when at rest, is known as

Coefficient of friction
Dynamic friction
Limiting friction
Static friction

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Engineering Mechanics
Three forces acting on a rigid body are represented in magnitude, direction and line of action by the three sides of a triangle taken in order. The forces are equivalent to a couple whose moment is equal to

Area of the triangle
Half the area of the triangle
None of these
Twice the area of the triangle

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Engineering Mechanics
The unit of work in S.I. units is

erg
joule
Newton
kg-m

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Engineering Mechanics
The maximum frictional force, which comes into play, when a body just begins to slide over the surface of the other body, is known as

Limiting friction
Static friction
Dynamic friction
Coefficient of friction

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