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Engineering Mechanics

Engineering Mechanics
The coefficient of friction depends upon

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

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Engineering Mechanics
When a body of mass moment of inertia 'I' (about a given axis) is rotated about that axis with an angular velocity to, then the kinetic energy of rotation is

Iω2
Iω
0.5 Iω
0.5 Iω2

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Engineering Mechanics
The velocity ratio in case of an inclined plane inclined at angle 'θ' to the horizontal and weight being pulled up the inclined plane by vertical effort is

tanθ
cosθ
cosecθ
sinθ

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Engineering Mechanics
The resultant of two forces P and Q (such that P > Q) acting along the same straight line, but in opposite direction, is given by

P + Q
P / Q
Q / P
P - Q

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Engineering Mechanics
Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the width (b), is

db³/36
db³/12
bd³/12
bd³/36

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

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

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MORE MCQ ON Engineering Mechanics

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