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Engineering Mechanics

Engineering Mechanics
The coefficient of friction depends upon

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

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Engineering Mechanics
The periodic time of one oscillation for a simple pendulum is (where l = Length of the pendulum.)

2π. √(l/g)
(1/2π). √(g/l)
(1/2π). √(l/g)
None of these

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

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

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Engineering Mechanics
In order to completely specify angular displacement by a vector, it must fix

Magnitude of angular displacement
Direction of the axis of rotation
All of these
Sense of angular displacement

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Engineering Mechanics
A smooth cylinder lying on its convex surface remains in __________ equilibrium.

Stable
Unstable
None of these
Neutral

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Engineering Mechanics
According to parallel axis theorem, the moment of inertia of a section about an axis parallel to the axis through center of gravity (i.e. IP) is given by(where, A = Area of the section, IG = Moment of inertia of the section about an axis passing through its C.G., and h = Distance between C.G. and the parallel axis.)

IP = IG / Ah2
IP = Ah2 / IG
IP = IG - Ah2
IP = IG + Ah2

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