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Engineering Mechanics

Engineering Mechanics
The moment of inertia of a thin rod of mass 'm' and length 'l', about an axis through its centre of gravity and perpendicular to its length is

ml2/8
ml2/12
ml2/4
ml2/ 6

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Engineering Mechanics
Two balls of equal mass and of perfectly elastic material are lying on the floor. One of the balls with velocity ‘v’ is made to strike the second ball. Both the balls after impact will move with a velocity

v
v/4
v/8
v/2

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

Downward at its upper end
Away from the wall at its upper end
Upward at its upper end
Towards the wall at its upper end

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Engineering Mechanics
A cable with a uniformly distributed load per horizontal meter run will take the following shape

Hyperbola
Parabola
Elliptical
Straight line

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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 depth (d), is

bd³/36
db³/12
bd³/12
db³/36

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Engineering Mechanics
Centre of gravity of a solid cone lies on the axis at the height

Three eighth of the total height above the base
One third of the total height above base
One-half of the total height above base
One fourth of the total height above base

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