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Engineering Mechanics

Engineering Mechanics
The process of finding out the resultant force is called __________ of forces.

Resolution
Composition
Decomposition
None of these

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Engineering Mechanics
The force applied on a body of mass 100 kg to produce an acceleration of 5 m/s2, is

None of these
20 N
500 N
100 N

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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
First
Second
Third

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Engineering Mechanics
The equivalent length of a simple pendulum which gives the same frequency as compound pendulum is

h/(kG² + h²)
(kG² + h²)/h
h²/(kG² + h²)
(kG² + h²)/h²

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Engineering Mechanics
The time of flight (t) of a projectile on an upward inclined plane is(where u = Velocity of projection, α = Angle of projection, and β = Inclination of the plane with the horizontal.)

t = 2u sin (α + β)/g cos β
t = g cos β/2u sin (α - β)
t = 2u sin (α - β)/g cos β
t = g cos β/2u sin (α + β)

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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.

Inversely proportional
Cube root
Directly proportional
None of these

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