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Engineering Mechanics

Engineering Mechanics
The horizontal range of a projectile (R) is given by

R = u² cos2α/g
R = u² cosα/g
R = u² sinα/g
R = u² sin2α/g

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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

h2/kG
h/kG
kG2/h
h × kG

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Engineering Mechanics
The linear acceleration (a) of a body rotating along a circular path of radius (r) with an angular acceleration of α rad/s2, is

a = α.r
a = α/ r
a = r / α
None of these

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Engineering Mechanics
A couple produces

Translatory motion
None of these
Rotational motion
Combined translatory and rotational motion

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

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

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Engineering Mechanics
A screw jack used for lifting the loads is

An ideal machine
A non-reversible machine
None of these
A reversible machine

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