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Engineering Mechanics

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

7mr²/5
2mr²/5
2mr²/3
7mr²/3

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

Upwards at its upper end
Towards the wall at its upper end
Away from the wall at its upper end
Downwards at its upper end

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Engineering Mechanics
If a body is acted upon by a number of coplanar non-concurrent forces, it may

All of these
Move in any one direction rotating about itself
Rotate about itself without moving
Be completely at rest

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Engineering Mechanics
If rain is falling in the opposite direction of the movement of a pedestrian, he has to hold his umbrella

Less inclined when standing
Less inclined when moving
More inclined when moving
More inclined when standing

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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.

Four times
Nine times
Six times
Two times

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Engineering Mechanics
The centre of percussion is below the centre of gravity of the body and is at a distance equal to

h/kG
h × kG
kG2/h
h2/kG

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MORE MCQ ON Engineering Mechanics

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