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Engineering Mechanics

Engineering Mechanics
The periodic time (T) is given by (where, ω = Angular velocity of particle in rad/s.)

2π/ω
ω/2π
π/ω
2π × ω

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Engineering Mechanics
During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.

Equal to
Equal and opposite to
Greater than
Less than

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Engineering Mechanics
The maximum acceleration of a particle moving with simple harmonic motion is

ωr
ω²r
ω/r
ω

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Engineering Mechanics
If the body falls freely under gravity, then the gravitational acceleration is taken as

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

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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

Coefficient of friction
Limiting friction
Dynamic friction
Static friction

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Engineering Mechanics
The C.G. of a solid hemisphere lies on the central radius 3r

At distance — from the plane base
At distance — from the plane base 3r
At distance — from the plane base 3r
At distance — from the plane base 3r

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