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Engineering Mechanics

Engineering Mechanics
The force, by which the body is attracted, towards the center of the earth, is called

Momentum
Mass
Weight
Impulsive force

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Engineering Mechanics
A particle moves along a straight line such that distance (x) traversed in 't' seconds is given by x = t² (t - 4), the acceleration of the particle will be given by the equation

6f - 4
6t² - 8t
6f - 8
3t² + 2t

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Engineering Mechanics
The centre of percussion of the homogeneous rod of length ‘L’ suspended at the top will be

2L/3
3L/4
L/3
L/2

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Engineering Mechanics
Which of the following is an equation of linear motion?(where, u and v = Initial and final velocity of the body, a = Acceleration of the body, and s = Displacement of the body in time t seconds.)

v = u + a.t
All of these
s = u.t + ½ a.t2
v2 = u2 + 2a.s

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Engineering Mechanics
In a screw jack, the effort required to lower the load is __________ the effort required to raise the same load.

Equal to
Less than
None of these
More than

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Engineering Mechanics
The coefficient of friction depends upon

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

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