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Engineering Mechanics

Engineering Mechanics
The moment of inertia of a solid cylinder of mass 'm', radius 'r' and length 'l' about the longitudinal axis or polar axis is

mr²/2
mr²/8
mr²/4
mr²/6

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Engineering Mechanics
The maximum efficiency of a lifting machine is

1/m
1/(m × V.R.)
m/V.R.
V.R./m

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Engineering Mechanics
The total motion possessed by a body, is called

Weight
Impulsive force
Mass
Momentum

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Engineering Mechanics
The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is known as

Principle of resolution of forces
Principle of independence of forces
Principle of transmissibility of forces
None of these

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Engineering Mechanics
When the lift is moving upwards with some acceleration, the pressure exerted by a man is __________ to its acceleration.

Directly proportional
None of these
Inversely proportional
Cube root

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Engineering Mechanics
The force required to move the body up the plane will be minimum if it makes an angle with the inclined plane __________ the angle of friction.

Greater than
Less than
None of these
Equal to

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