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Engineering Mechanics

Engineering Mechanics
A pendulum which executes one beat per second is known as

Second's pendulum
Torsional pendulum
Compound pendulum
Simple pendulum

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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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Engineering Mechanics
Three forces acting on a rigid body are represented in magnitude, direction and line of action by the three sides of a triangle taken in order. The forces are equivalent to a couple whose moment is equal to

None of these
Area of the triangle
Twice the area of the triangle
Half the area of the triangle

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Engineering Mechanics
The angle between two forces when the resultant is maximum and minimum respectively are

90° and 180°
0° and 180°
180° and 0°
90° and 0°

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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/ 6
ml2/12
ml2/4
ml2/8

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Engineering Mechanics
A rubber ball is dropped from a height of 2 m. If there is no loss of velocity after rebounding, the ball will rise to a height of

1 m
4 m
3 m
2 m

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