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Engineering Mechanics

Engineering Mechanics
The friction experienced by a body, when in motion, is known as

Dynamic friction
Rolling friction
Static friction
Limiting friction

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Engineering Mechanics
On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be

Perpendicular to the wall at its upper end
Zero at its upper end
Upwards at its upper end
Downwards at its upper end

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Engineering Mechanics
The center of gravity of a semi-circle lies at a distance of __________ from its base measured along the vertical radius.

3r/4π
4r/ 3π
8r/3
3r/ 8

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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
Nine times
Four times
Two times

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Engineering Mechanics
A particle inside a hollow sphere of radius r, having coefficient of friction µ can rest up to height of

r/3
r/A
0.134 r
r/2

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Engineering Mechanics
The velocity ratio for the first system of pulleys is (where n is the number of pulleys.)

n²
n
2n - 1
2n

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MORE MCQ ON Engineering Mechanics

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