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Engineering Mechanics

Engineering Mechanics
The maximum height of a projectile on a horizontal plane, is

u² sin²α/g
u² sin²α/2g
u² cos²α/2g
u² cos²α/g

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Engineering Mechanics
A ladder is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act

Downward at its upper end
Upward at its upper end
Zero at its upper end
Perpendicular to the wall at its upper end

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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.

None of these
Decrease
Increase
Not be effected

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Engineering Mechanics
Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its vertex and parallel to the base, is __________ than that passing through its C.G. and parallel to the base.

Six times
Two times
Nine times
Four times

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Engineering Mechanics
The velocity ratio of a first system of pulleys with 4 pulleys is

20
4
8
16

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Engineering Mechanics
The center of gravity of a quadrant of a circle lies along its central radius (r) at a distance of

0.5 r
0.7 r
0.8 r
0.6 r

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MORE MCQ ON Engineering Mechanics

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