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Engineering Mechanics

Engineering Mechanics
The unit of work in S.I. units is

erg
kg-m
Newton
joule

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Engineering Mechanics
The ideal angle of banking provided on the curves on roads depends upon

Weight of the vehicle
Nature of the road surface
Coefficient of friction between the road and vehicle contact point
(Velocity)2 of the vehicle

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Engineering Mechanics
A body of weight 'W' is required to move up on rough inclined plane whose angle of inclination with the horizontal is 'α'. The effort applied parallel to the plane is given by (where μ = tanφ = Coefficient of friction between the plane and the body.)

P = W (cosα + μsinα)
P = W (sinα + μcosα)
P = W tanα
P = W tan (α + φ)

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Engineering Mechanics
The forces, whose lines of action are parallel to each other and act in the same directions, are known as

Coplanar non-concurrent forces
Unlike parallel forces
Like parallel forces
Coplanar concurrent forces

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Engineering Mechanics
The C.G. of a solid hemisphere lies on the central radius 3r

At distance — from the plane base 3r
At distance — from the plane base
At distance — from the plane base 3r
At distance — from the plane base 3r

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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/2
v/8
v/4
v

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MORE MCQ ON Engineering Mechanics

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