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Engineering Mechanics

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

ωr
ω2r
ω
ω/r

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Engineering Mechanics
Moment of inertia of a triangular section of base (b) and height (h) about an axis through its base, is

bh3/4
bh3/12
bh3/8
bh3/36

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Engineering Mechanics
A block of mass 20 kg lying on a rough horizontal plane is connected by a light string passing over a smooth pulley to another mass 5 kg, which can move freely in the Vertical direction, as shown in the below figure. The tension in the string will ___________ with the increase in coefficient of friction.

Increase
Not be effected
Decrease
None of these

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Engineering Mechanics
The centre of gravity of a uniform lamina lies at

All of these
The centre of heavy portion
The bottom surface
The midpoint of its axis

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Engineering Mechanics
The velocity ratio of a single purchase crab winch can be increased by

Increasing the radius of the load drum
Increasing the number of teeth of the pinion
All of these
Increasing the length of the handle

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Engineering Mechanics
The coefficient of friction depends upon

Area of contact
Nature of surfaces
All of these
Shape of the surfaces

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MORE MCQ ON Engineering Mechanics

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