Theory of Machine
The sense of Coriolis component 2 ωv is same as that of the relative velocity vector v rotated at

45° in the direction opposite to the rotation of the link containing the path
45° in the direction of rotation of the link containing the path
90° in the direction of rotation of the link containing the path
180° in the direction opposite to the rotation of the link containing the path

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Theory of Machine
In a single slider crank chain

Each of the four pairs is a turning pair
Two are turning pairs and two are sliding pairs
Three are turning pairs and one is a sliding pair
One is a turning pair and three are sliding pairs

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Theory of Machine
The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the

Effects of unbalances are directly proportional to the speed
Effects of unbalances are proportional to the square of the speed
Unbalanced couples are caused only at higher speeds
Unbalanced forces are not dangerous at higher speeds

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