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Engineering Mechanics

Engineering Mechanics
If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is

None of these
g/4
g/2
g/3

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Engineering Mechanics
The frequency of oscillation of a compound pendulum is (where kG = Radius of gyration about the centroidal axis, and h = Distance between the point of suspension and C.G. of the body.)

2π. √(kG² + h²/gh)
2π. √(gh/kG² + h²)
1/2π. √(kG² + h²/gh)
1/2π. √(gh/kG² + h²)

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Engineering Mechanics
The moment of inertia of a sphere of mass 'm' and radius 'r', about an axis tangential to it, is

7mr²/3
2mr²/5
2mr²/3
7mr²/5

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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.)

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

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Engineering Mechanics
From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the centre of circular plate

1.0 cm
0.5 cm
2.5 cm
1.5 cm

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Engineering Mechanics
Coefficient of friction depends upon

Both (A) and (B)
Area of contact only
None of these
Nature of surface only

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MORE MCQ ON Engineering Mechanics

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